Specification Brand : KHK BulletPoint1 : Accuracy grade: C5 ground Precision; Ball screw diameter: 20mm; Lead / Pitch: 5mm; Total length: 41.34 inch / 1050mm; with ball screw nut, Standard End Machining for BK BF 15 Bearing end support BulletPoint2 : The C5 precision ball screw is most smooth and accurate movement with much smaller error and fluctuation. Low drive torque, high stiffness and quiet motion with predictable lengthened service life. BulletPoint3 : Accuracy Class is important if you wish to control backlash. C5 Accuracy Class has less backlash than C7 Accuracy Class. Comparatively, the C5 accuracy class has about 0.005 mm (0.0002 inches) of backlash BulletPoint4 : Warranty & Technical Support: Feel free to return them without any reason, we trust our customers; As one of the most professional seller, we provide CAD 3D files, full series producst and kinds of accessories (some have not shown on Amazon), special processing or any other questions, please let us know through message BulletPoint5 : C5 accuracy ball screws include SFU1204 SFU1210 SFU1604 SFU1605 SFU1610 SFU2004 SFU2005 SFU2010 SFU2504 SFU2505 SFU2510 SFU3205 SFU3210 and so on, the DFU ballscrews with C5 grade ground are also avaiable ItemName : KHK SWG1.5-R1J10, 1.5, Single Lead, Right Hand, Ground Worms ItemPackageQuantity : 1 ItemTypeKeyword : worm-gears Manufacturer : KHK Material : Carbon Steel NumberOfItems : 1 PartNumber : SWG1.5-R1J10 ProductDescription : KHK SWG1.5-R1J10, 1.5, Single Lead, Right Hand, Ground Worms ProductSiteLaunchDate : 2016-07-05T18:00:33.606Z Size : L: 41.34 in / 1050mm Style : Ground Worms SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31170000