Specification Brand : Heyiarbeit BulletPoint : 4pcs 8x6.35mm CNC Motor Jaw Shaft Coupler 8mm To 6.35mm Flexible Coupling OD 19x25mm Dropshipping BulletPoint1 : 【Total Size】-20mm×25mm/0.79inch×0.98inch(Outer Diameter x Length); Connection diameter: 6mm to 6mm (0.24 inch to 0.24 inch); Thread Size: M3 BulletPoint2 : 【Premium Metal】- Made of high quality Aluminum Alloy with Oxidation treatment. High durability and stability BulletPoint3 : 【Characteristics】- The flexibility of the coupler eliminates stresses between the motor and the drive components BulletPoint4 : 【Design】- One-piece metal spring coupling, used for small torque shaft connection, absorbs parallelism, angular deviation and shaft end clearance through spring action BulletPoint5 : 【Wide Application】- The shaft couplers are widely applied to small CNC machines encoding and 3D printers Z shaft coupling, simplifies the debugging difficulty ExteriorFinish1 : Silver ExteriorFinish2 : Aluminum ExternallyAssignedProductIdentifier : 5394239539109 FinishType : Polished ItemName : Heyiarbeit 6mm to 6mm Shaft Coupling 25mm Length 20mm Dia Stepper Motor Coupler Aluminum Alloy Joint Connector for 3D Printer CNC Machine DIY Encoder ItemPackageDimensions_Height : 100 millimeters ItemPackageDimensions_Length : 100 millimeters ItemPackageDimensions_Width : 100 millimeters ItemPackageQuantity : 1 ItemTypeKeyword : beam-couplings Manufacturer : Heyiarbeit Material : Aluminum MetalType : Aluminum NumberOfItems : 1 PartNumber : DFP0201GP0511-FBA ProductDescription : Heyiarbeit Threaded tight elastic coupling specification: Product name: Threaded tight elastic coupling Outer diameter: 20mm/0.79in Length:25mm/0.98in Bore Diameter: 6mmx6mm/0.24 inx0.24 in Maximum torque/N.m: 2.2 Maximum speed (rpm): 8000 Screw diameter: M3 Features: 1.set screw type, beam coupling. Zero backlash 2.One-piece Aluminum Alloy spring coupling, For little torque shaft connect. 3. When space is limited, it increases your access and gives you a better angle by working around obstructions and into tight spots. 4.Widely used in drive systems for encoders, instrumentation,lead screws, small pumps, feed rollers and anywhere light to medium duty, torsionally flexible coupling is required. Package Includes: 1 x Threaded tight elastic coupling