Used Cnc Tube Bending Machine for sale (65,706)

Condition: new, functionality: fully functional, Year of construction: 2026, tube bender R 1 ZOPF - without bending tooling - with foot pedal and emergency stop - without tooling - control unit - 100 programs of 9 bends each - precise electronic control of C-shaft - manual and automatic bending mode - bending angle and springback angle are programmable by means of a microprocessor - rapid engagement and disengagement of the tooling - scale for counterbending holder - movable Gedpfx Aefiqnteh Esbw - dimensions 930x410x1000 mm - weight 280 kg - motor 1,5 Kw - 220 volt single phase - bending radius R55 - R340 mm - bending capacity of tube Ø 5 mm to 50 mm - max. Bending angle of 210 °

Condition: good (used), Year of construction: 2006, machine/vehicle number: 4806067, Offer 25059 Technical data: - Pipe bending capacity at 45 kg / mm² up to Ø 48 X 3.5 mm - Solid material up to 30 mm - Bending angle 0 - 180 ° - Largest average bending radius Rm 225 mm - Smallest inner bending radius Ri 10 mm - Drive 220 V / 1.7 Kw - Space requirement approx. W 400 x H 950 x D 600 mm - Weight approx. 100 kg - with - Bending angle preselection Gjdpfx Ajv Dux Djh Eebw - Digital bending angle display + bending angle fine adjustment - Bending tools, Ø ½“ R 67 mm, Ø 1“ R 67 mm,

Condition: excellent (used), functionality: fully functional, Year of construction: 2018, control type: manual, degree of automation: automatic, actuation type: electric, pipe diameter (max.): 60 mm, pipe length (max.): 6,000 mm, tube wall thickness (max.): 5 mm, bending angle (max.): 180 °, input voltage: 400 V, input frequency: 50 Hz, Equipment: emergency stop, It is a machine from 2018 and we used very little. Gbodpfx Ahoyvhl Hj Eew We can bend pipe from 18 mm - 60 mm Machine cost new 2018 was ca 45.000,00 EUR and tools was ca 55.000,00 so total was EUR 100.000,00

Condition: excellent (used), functionality: fully functional, Year of construction: 1989, pipe diameter (max.): 42 mm, pipe length (max.): 3,000 mm, bending radius (max.): 180 mm, wall thickness: 3 mm, Pipe bending machine with electric control, 4-fold bending angle pre-selection and digital display  Gbedpfxouccw Hs Ah Esw Hydraulic bending drive operated by hand lever valve Hydraulic bending drive, operated by hand lever valve Follower-type pressure die (sliding guide) Hydraulic mandrel retraction Pipe circular saw with coolant lubrication and automatic feed 6 mandrels up to 24 mm included x 3000 mm Pipe deburring unit for internal and external deburring Hydraulic power unit as basic seating for attaching a cutting ring assembly or flaring device  Machine mobile and flexible to use Max. tube Ø: 42mm Min. tube Ø: 6mm Max. Wall thickness: 3mm Max. Bending radius:5mm Min. bending radius:180mm Max. bending length:3000mm Deburring attachment:Yes Sawing attachment: Yes Flair attachment: Yes Length: 3500mm Width: 1000mm Height: 1200mm Weight: 1000kg

Condition: new, Year of construction: 2026, Mandrel-free pipe bending machine RB 54 - NC-controlled, with large program memory Article number: 4300054 NC control for setting the bending angle Up to 50 programs can be saved High-quality, robust design Fast tool change Purely motor drive Automatically returns to the starting position TECHNICAL DATA General information Gbjdpovk Scgsfx Ah Ejw Bending radius max. 162mm Bending angle max. 210° Bending speed(s) 2rpm Torque 2341Nm Dimensions and weights Length (product) approx. 600mm Width/depth (product) approx. 220mm Height (product) approx. 470mm Weight (net) approx. 107kg Bending performance Bending performance of pipe material 420 N/mm² (Ø x wall thickness) 54 x 4mm Bending performance of pipe material 350 N/mm² (Ø x wall thickness) 54 x 4mm Bending performance of pipe material 650 N/mm² (Ø x wall thickness) 42 x 3mm Electrical data Drive motor power 1.1kW Connection voltage 400V Mains frequency 50Hz Location: from stock - available immediately -

Condition: used, Year of construction: 1990, Technical details: tube diameter: 42 mm wall strength: 25 mm round bar steel: max. Ø 20 mm square material: Rohr 25 x 25 mm bending radius max.: innen max: Ø 20 und außen max: Ø 170 mm bending speed: keine Angaben °/s Gbodpfxju Ibvus Ah Ejw tube pipe draw up length: 3000 mm control: Software RC 7000 weight of the machine ca.: 2,8 t dimensions electric cabinet: 800 x 700 x 2000 mm dimension machine xH: 5,1 x 0,7 x 2,0 m Application: Machining of deformable tubes, rectangular tubes and round bars and square tubes. Description of the software RC7000, programming manual rectangular tube 42 x 20 x 2,5mm bending direction to the left Operation via control panel with monitor Accessories: -div. bending tools for tube Ø 25mm -12 div. collets -div. auxiliary and clamping devices *

Year of construction: 1978, condition: ready for operation (used), A Haeusler CNC large-format 4-roll plate bending machine is available. Number of rolls: 4, Roll width: 3050mm, Max. prebending plate width: 3000mm, Max. prebending plate thickness: 60mm, Max. rolling capacity at max. plate width and 3500mm bending diameter: 70mm, Roll diameter top/bottom/side: 620mm/600mm/500mm, Max. top roll load: 12000kN, Operating speed: 4m/min, Connected load: 132kW, Weight: approx. 85t. Including cone bending device. Documentation available. An on-site inspection is possible. Gsdpjzka H Aofx Ah Esbw

Condition: used, Year of construction: 1980, TUBE BENDING MACHINE Gsdpfsrq D N Rjx Ah Eebw LANG TYPE EL90 Φ 90

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2002, Equipment: CE marking, documentation/manual, Ercolina Profiling Machine Model: CE40MR3 Year: 2002 Complete documentation Condition: Used, excellent condition, ready for use Gbedpfxe Af Iqdj Ah Ejw Included accessories: None Shaft diameter: 40mm

Condition: like new (used), Year of construction: 2023, Mandrel Bending Machine S4501 ----- For the production of tube geometries with bending radii from 1.5xD → Maximum bending capacity, tube 42.4 x 3.25 mm (steel max. Re 240 N/mm²) → Maximum bending capacity, tube 30 x 30 x 3 mm → Maximum bending capacity, tube 42.4 x 2 mm (stainless steel 0.2 260 N/mm²) Gbedpetr U Hlofx Ah Ejw → Total connected load 3 kW → Tube loading length approx. 1.5 m Robust and durable steel construction. Maintenance-free servo drive for the bending, feed, and rotation axes. The control system's touch display ensures easy and intuitive programming and operation. Once the tube is loaded, it is fixed in place by the chuck in the carriage, enabling precise tube positioning and the production of dimensionally accurate geometries. Standard features include tube geometry verification before the bending process: if the bending operation is initiated at an incorrect position, the machine will not grant approval, reliably preventing operator errors. Optional features offer greater convenience, increase output, and therefore improve the machine's efficiency. Data exchange with the optional TBS-3D tube calculation software (PC version) is performed via USB stick or network. Existing tube geometries can be imported into the software. Standard equipment: → Servo drive for bending axis, 1.5 kW → Adjustable rotation speed → Left-hand bending direction → Bending angle resolution 0.1° → Maximum bending radius 120 mm → Bending shaft diameter 50 mm → Servo drive feed → Servo drive rotation → Three-jaw chuck for securing the tube in the carriage → Pneumatic tool retraction Hydraulics: → Hydraulic tube clamping with adjustable clamping pressure → Programmable early mandrel retraction PLC Control System: → 10" color touchscreen → ETH 10/100, X2X Link, 2x USB → Foot pedal operation → Data transfer via LAN network or USB → Material database Unique graphical programming: simple geometries can be calculated directly on the machine. After inputting length and angle, the control automatically calculates the feed values and bending angles. Power supply: 400V 16A Dimensions: L: 2.3 m x W: 1 m x H: 1.4 m Weight: approx. 1200 kg

Year of construction: 2015, condition: new, functionality: fully functional, Automated manufacturing plant for the production of SDR 11 and SDR17 grade tube bends Patented bending system where the ends of the tubes are inserted into the bend radius during bending. This reduces the reduction of the outer wall of the tube during bending and reduces costly material additions to compensate for the loss of wall thickness. Tube bends can be manufactured with a final bend angle of 90°. Variable bend angle adjustment Simultaneous heating of the bending blank in the radiator field Rotation of bending blanks during heating to achieve homogeneous heating Gjdpfx Aju Itlnjh Ejbw The ends are not heated, so their geometry remains unchanged. The bending of the tube can therefore be further processed by conventional butt welding of tubes Automatic transport of semi-finished products from the buffer hopper to the removal of the finished tube bends, depending on customer requirements. Siemens PLC control system with touchscreen user interface

Condition: used, functionality: unexamined, Year of construction: 2006, machine/vehicle number: 109, control type: NC control, actuation type: hydraulic, controller manufacturer: siemens, pipe diameter (max.): 80 mm, pipe length (max.): 4,500 mm, tube wall thickness (max.): 4 mm, bending angle (max.): 180 °, overall weight: 1,500 kg, Equipment: CE marking, emergency stop, Tracto Technik mandrel bending machine TB 80 L Year of manufacture 2006 with bending tools 11/4", 11/2", 2" gas with mandrel rods and mandrels Tube feed length 4500 mm Bending direction: right Bending capacity up to tube 76.1 x 4.0 mm Maximum bending radius 200 mm Electro-hydraulic drive 3.5 kW 400 volts 50 Hz 3-phase Overall length 5615 mm Weight 1500 kg Freestanding bending head for maximum bending freedom Electronic bending axis control via touch panel, with setpoint/actual value display, automatic angle adjustment and memory function Tube clamping hydraulically, clamping pressure adjustable Glide block adjustment hydraulically Glide block unit rotating (glide guide) Bending mandrel extraction hydraulically Machine is mobile and can be used flexibly Gsdpfx Ahsz Rn Sre Eebw

Condition: used, Automatic Tube Bending Machine Brand: B.L.M. Model: B/90/M Gbedpox Swbiofx Ah Ejw Description: Automatic tube bending machine designed for industrial applications, equipped with automatic programming for producing multiple bends in sequence. The machine allows adjustment of the reference distance, ensuring high precision and repeatability in the bending process. For all technical details, please refer to the technical data sheets available in the photos.

Condition: used, functionality: fully functional, Year of construction: 1994, Tracto-Technic tube bending machine Model Tubobend Capacity : 42 mm. Year : 1994 Bending tools : 42 – 38 – 30 – 25 mm. including mandrels Gbsdpfe Afhr Hox Ah Eow

Condition: new, Year of construction: 2026, BENDMASTER 70 Tube and Profile Bending Machine The BENDMASTER 70 tube and profile bending machine is an industrial, non-mandrel bending machine designed for precise bending of steel tubes, square profiles, and materials with larger cross-sections. Thanks to its robust construction, automated bending angle measurement system, and powerful drive unit, the machine provides repeatability, efficiency, and reliability – even during intensive production work. It is an ideal solution for heavy industry, construction, and industrial installation applications. Main advantages of the machine Non-mandrel bending system – enables tube bending without the need for a mandrel, simplifying operation and accelerating the production process. Maximum tube capacity of 70 × 5 mm – allows processing of thick-walled steel and structural tubes. 5 kW main drive motor – provides high torque and reliable bending performance even with demanding materials. Digital bending angle display – real-time monitoring of preset and actual values enables precise parameter adjustment. Two-speed operating system – 1.2 rpm during bending and 2.4 rpm during return movement increase overall cycle efficiency. Stable welded steel construction – ensures resistance to deformation and vibration, even under heavy loads. Dies for tube diameters 38.1 mm, 48.3 mm, and 70 mm – the machine includes tooling for the most commonly used industrial tube sizes. Design and technology The BENDMASTER 70 has been designed as a non-mandrel roller bending machine with an electro-hydraulic drive system, suitable for heavy-duty operation. The powerful 5 kW main motor enables stable and safe bending of large-diameter tubes. Gbodpfx Ahovugv Aj Eew The digital bending angle measurement system integrated with the control panel allows precise programming and monitoring of operating parameters. The machine features a compact design and can be integrated into production lines. Precision and work efficiency The BENDMASTER 70 steel tube bending machine provides complete control over the bending process. The die rotation speed during bending (1.2 rpm) ensures accuracy and process safety, while the fast return speed (2.4 rpm) improves productivity. The ability to bend up to 180° allows the production of complete arcs and spiral shapes, including large-section structural tubes. The machine is designed for precise forming of components where dimensional accuracy is critical. Applications The BENDMASTER 70 bending machine is used in many industrial sectors, including: production of steel structures and load-bearing components, construction and installation industries, HVAC and heating system installations, production of railings, gates, and industrial fencing, prefabrication plants for piping systems. Standard equipment Digital bending angle measurement system Tube bending dies: Ø 38.1 mm Ø 48.3 mm Ø 70 mm Technical specifications Parameter Value Maximum tube bending capacity 70 × 5 mm Maximum square profile capacity 50 × 50 × 2 mm Maximum bending angle 180° Die rotation speed during bending 1.2 rpm Die rotation speed during return 2.4 rpm Main motor power 5 kW Overall dimensions 1300 × 700 × 900 mm Weight 680 kg

Condition: excellent (used), functionality: fully functional, Year of construction: 2019, Max. bending diameter: Ø 76 mm Max. pipe wall thickness: 3.0 mm Max. bending length: 6000 mm Min. bending angle: 0.1° Max. bending angle: 190° Max. bending radius: 260 mm Operating speed Rotation speed: 200°/second Bending speed: 30°/second Feed speed: max. 1000 mm/second Tolerances: Rotation (°): ±0.1° Bending (°): ±0.1° Feed (°): ±0.1° Hydraulic system: Hydraulic motor power: 7.5 kW Max. hydraulic pressure: 180 bar Hydraulic oil: 120 liters Rated power: 44 kW Voltage: 400 V AC Dimensions L x W x H: 8900 x 1200 x 1850 mm Weight: 4850 kg Description: Materials: Steel | Stainless steel | Aluminum | Brass | Copper and other flexible materials for simple to complex shapes Display: Portable 15-inch color touchscreen monitor Control panel: Servo and hydraulic motion control, plus selectable servo axis speed Foot pedal User-friendly AKYAPAK control software Hydraulic system: Bosch, Parker Operating modes: Manual, semi-automatic, and fully automatic Programming: Y-B-C or X-Y-Z mode Cooling system: Hydraulic oil cooler Pipe clamp: Hydraulic Industrial PC: Pentium processor, 256 MB RAM, hard drive, and floppy disk drive Lubrication system: Automatic Control: PLC-based Gbjdsyr N Erspfx Ah Ejw Rotary axis: Servo-controlled Bending system: Hydraulic Auxiliary axes: Hydraulic Forward and reverse movement: Manual Pipe length calculation: Automatic, according to program Workpiece display: 3D 360° graphic display

Condition: excellent (used), functionality: fully functional, Year of construction: 2008, actuation type: hydraulic, The Baileigh Industrial R-H85 is a heavy-duty, industrial-grade hydraulic double-pinch roll bender designed for precision metal fabrication. It is engineered to minimize material waste and deliver highly accurate, repeatable bends for high-capacity applications. Core Specifications & Capabilities Bending Capacity: Capable of handling up to 3″ Schedule 40 pipe and 3-3/8″ x 3-3/8″ x 1/4″ angle iron. Double-Pinch Design: Features a fixed top roll and two lower rolls driven by independent hydraulic cylinders. This setup allows for pre-bending and post-bending, minimizing the unbent straight sections at the edges of the material to reduce scrap metal waste. Driven Rolls: Equipped with an industrial-grade hydraulic transmission that powers all 3 rolls at a speed of 5.2 rpm. Gbodpfozn Rdmox Ah Ejw Versatile Operation: The machine can be adjusted to operate in either a vertical position for smaller diameters or a horizontal position when rolling larger radii. Key Features Precision Control: Includes a portable operator pedestal housing an integrated digital readout (DRO). Encoders communicate with the DRO for exact positioning of the lower rolls, and programmable stops ensure easy repeatability across large production runs. Anti-Twist Lateral Guides: Features hydraulically powered lateral angle guide rolls that keep structural shapes properly aligned and prevent twisting during the bending process. Segmented Tooling: Comes standard with hardened tool steel, segmented drive rolls that can be reconfigured to match various material sizes and shapes. Heavy-Duty Build: Constructed from heavy steel plate that is both bolted and welded to eliminate framework flex even when operating at maximum capacity.

Condition: like new (used), functionality: fully functional, Year of construction: 2026, operating hours: 8 h, machine/vehicle number: BD38NCCOMP, bending angle (max.): 190 °, overall weight: 900 kg, total length: 3,100 mm, total width: 950 mm, total height: 1,500 mm, power: 6 kW (8.16 HP), input voltage: 220 V, type of input current: AC, warranty duration: 12 months, Semi-Automatic Single-Head Hydraulic Pipe Bending Machine BD50NC2A Machine Model: BD38NCCOMP Machine Applications  Transportation Sector For locomotives, automobiles, and bicycles: exhaust manifolds, brake lines, fuel supply conduits, steering mechanisms, air - conditioning ducting systems, seating assemblies, balancing components, bumper structures, window frame assemblies, handlebar components, and frame structures.  Furniture Industry Indoor and outdoor seating and table sets, office furniture including desks and chairs, shelving units, bed frames and associated furniture pieces.  Leisure and Recreation Industry Fitness apparatus, infant strollers, utility carts, and amusement ride installations.  HVAC (Heating, Ventilation, and Air - Conditioning) and Appliance Industry Water heating units, electric heating appliances, gas - fired cooktops, refrigeration units, and air - conditioning equipment.  Heavy Industrial Sphere Piping networks for boilers, heat exchanger, power generation plants, chemical processing facilities, diesel engine manufacturing, and shipbuilding operations.  Diverse Other Industries Household consumer goods, rehabilitation - oriented medical devices, sanitary fixtures, the decoration and interior design sector, the construction industry, agricultural machinery and equipment, and the aviation manufacturing and maintenance industry. Specification The largest applicable carbon steel pipe (bending radius ≥ 2d) Φ38×2.0mm (thickness Max. 2.0) The largest applicable stainless steel pipe (bending radius ≥ 2d) Φ38×1.5mm (thickness Max. 1.5) Gbsdpjya An Nefx Ah Eow Maximum core length (*) 850mm Critical Parts and Functional Components Maximum bending radius (*) 320mm Maximum bend angle 190° The number of bends that can be set for each pipe fitting (*) 25 bends The number of pipe fitting files can be set 280 sets (extensible) Working speed bending speed Max.90°/s Machine tool bending angle ±0.1°

Condition: new, functionality: fully functional, Year of construction: 2027, pipe diameter (max.): 38 mm, bending angle (max.): 190 °, bending radius (max.): 220 mm, total length: 2,500 mm, power: 8 kW (10.88 HP), input voltage: 400 V, input frequency: 50 Hz, type of input current: three-phase, warranty duration: 24 months, drive type: Servo - Hydraulic, pressure: 150 bar, wall thickness: 2 mm, working length: 2,000 mm, Equipment: documentation/manual, 38x2mm Twin Head Tube Bending Machine The “Gemini” tube bending machines structures. This type of tube benders bend the tubes with own two bending heads. Gemini has 3 different type which are DB, DBF, DBFR. 1 pc. Ø38mmx2mm Godpfx Aevuqmxsh Eobw 2 pcs. Ø25mmx1,5mm 3 pcs. Ø16mmx1,5mm 4 pcs. Ø13mmx1,5mm DB series makes bending operation automatically. DBF series makes bending and feeding operation automatically. DBFR series makes bending, rotating and feeding operation automatically.

Condition: new, functionality: fully functional, Year of construction: 2026, Pipe Bending Machine Zopf Model KB 100: Capacity: - Maximum pipe diameter: 100x5 mm (St. 37) - Square profiles: 80x80x3 mm - Solid material: 45 mm - Maximum tool diameter: 900 mm - Bending angle up to 210 degrees - Bending speed: 0 - 2.2 RPM - Motor: 11 kW, 400 Volt, 50 Hz, 3-phase - Weight: 1850 kg - Dimensions: 140x80x160 cm Features: - Digital display - Programmable bending angle - With foot pedal - Equipped with inverter - Powerful motor and reduction gearbox for high torque - Control unit for setting the bending angle - Counter for positioning the counter bearing - Mobile control panel Gsdpsx I Afxofx Ah Esbw - Quick tool change - All shafts hardened and ground - Manual material clamping - Worktable made of CK 45 steel

Condition: used, Bending capacity: Ø45 mm Bending angle: 0 - 180° Revolver-adjustment: 8-fold adjustable angles Mandrellength: 4000 mm Sets of bendingdies: 1x Ø 16 mm 2x Ø 17 mm 3x Ø 20 mm 2x Ø 27 mm 1x Ø 28 mm 2x Ø 30 mm Featured with: - 4 Mandrels - Mandrel retraction unit Country of origin: Germany Motor power: 3 kW Machine LxWxH: 400 x 100 x 120 cm Machine weight: 1500 kg Gedpfx Aheq Nipys Ejbw

Year of construction: 1993, condition: reconditioned (used), year - 1993 / 2020 complete reconditioned with new PLC Management tube diameter max. 100 mm wall thicknes - 10 mm pull up length of tube - 6000 /12000 mm Mandrel pipe bending up to 4 mm pipe wall thickness and pipe bending without mandrel from 5.0 - 10 mm pipe wall thickness accuracy of bending angle ± 0,2 ° total power requirement - 50 kW Gbedpsiau Uuofx Ah Ejw weight of the machine ca. 6 t

Condition: new, functionality: fully functional, Year of construction: 2027, pipe diameter (max.): 38 mm, bending angle (max.): 190 °, bending radius (max.): 220 mm, total length: 4,250 mm, power: 19 kW (25.83 HP), input voltage: 400 V, input frequency: 50 Hz, type of input current: three-phase, warranty duration: 24 months, drive type: Servo - Hydraulic, operating speed: 147 mm/s, pressure: 150 bar, wall thickness: 2 mm, working length: 3,600 mm, Equipment: documentation/manual, 38x2mm Fully Automatic Cnc Tube Bending Machine The "Griffin" tube bending machines are hybrid structures. This type of tube benders includes hydraulic and pneumatic for clamping operations. Bending, feeding, rotation, stack changer and tube aligment operations working with servo engine. Flexible bending and working capacity with CNC control system. The capacity to adjust molds in 3 different radius scales Godpfovurm Hox Ah Eobw Ability to automatically convert 3D technical drawings to bending program Multivariable roll bending system Ability to work with or without a mandrel Automatic oil cooling system With linear guideway systems minimize the system gaps in moving parts Program changing feature while in the bending process ETU bending simulation program, for bending process, helps to make 3d tube bending arising from the coordinates, with excellent results. With DcOnTool tool, you can convert X, Y, Z coordinates to bending program (Y,B,C) Can review the last error messages with Dlog Its user-friendly, easy, knowledgeable and quick-to-learn design allows you to start the project quickly. Easy to use with 17 inch computer. The vibration-free structure shall help your work. Unlimited program saving and changing Turkish – English and French language 10 years sending spare parts

Condition: good (used), Year of construction: 2018, Manufacturer: INDUCTAFLEX Type: AL-3e Control system: ACCURATE touch screen Year of construction: 2018 3 rolls driven servo Torq each roller 3500 nM Electrically support rolls Intelligent software : Ellipse program Gbodpevd Dftsfx Ah Ejw U Bend shapes control of tangents Auto section detector Specifications Metric US Standard Horizontal and Vertical Horizontal Axis Ø 105 mm Number of rollers 3 Stroke X axis 0 - 400 mm Dimensions (estimate) length 4500 mm width 3200 mm height 2700 mm weight 3300 kg Please note: The information on this page is given in good faith and to the best of our knowledge, and where possible, has been obtained from the manufacturer, but accuracy cannot be guaranteed. Accordingly, it does not constitute a representation or contract and we recommend that you check all relevant details.

Condition: new, Year of construction: 2026, • efficient, quiet and powerful mechanical machine • fast processes as in the case of MAX and MAB machines • Possibility to make omega profiles without additional tools • 1 top bar 20°, radius 1 mm, 66/24 mm Gedpfx Aolbimajh Esbw • 1 bending bar 10/68 mm and 24/68 mm • operating pedal • soft start of the bending beam • mechanical stop with a working length of 6-1000 mm • 32 A plug + 5 m power cord for EU • supply voltage: 3 x 400 V, 50 Hz for EU Thickness of bent sheet 1.5 mm steel sheet for 3000 mm length