Specification Brand : akkacm BulletPoint1 : 【High Quality】The Oldham Coupling is made of brass for reduced friction and sufficient strength,produced by a CNC machine with high precision, resulting in minimal joint clearance between the three parts and low inertial movement. BulletPoint2 : 【High accuracy 】 The center distance between the two holes is 18mm, and the fixing hole is M3, use for 8mm lead screw. BulletPoint3 : 【Function】If the lead screw is not straight, the printing accuracy will be a problem, then this kit will solve it. High torsional stiffness to protect the follower and support bearing, used to avoid the effect on large radial deviation. It is used to improve printing quality and avoid problems caused by hot bed oscillation during printing, such as subtracting the effect of clearance when the lead screw is not straight during printing. BulletPoint4 : 【Wide Compatibility】 Compatible with Creality CR10 CR-10S Pro Ender-3 ENDER 3S Ender 3 Pro, Ender 3 V2 3D printers and other 3D printers with leadscrew fixing holes of M3 and distance between two holes of 18mm. BulletPoint5 : 【Package】 1set of Oldham coupling,1pcs 2mm wrench. ExternallyAssignedProductIdentifier1 : 0768434945075 ExternallyAssignedProductIdentifier2 : 768434945075 ItemName : 2-Pack Ender 3 Oldham Coupling Coupler for Upgrade Ender 3 Pro V2 CR-10 CR-10S Pro 3D S4 S5 Printer Z Axis T8 Lead Screw Hotbed Advoid Radial Misalignment (2-Pack, for Ender 3) ItemPackageDimensions_Height : 8.6106 centimeters ItemPackageDimensions_Length : 2.1082 centimeters ItemPackageDimensions_Width : 6.1976 centimeters ItemTypeKeyword : 3d-printer-accessories Manufacturer : akkacm NumberOfItems : 2 PartNumber : B02064 ProductSiteLaunchDate : 2023-05-13T05:08:57.262Z Size : 2-Pack Style : For Ender 3 SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 31161500