Specification Brand : Tyenaza BulletPoint : Couplings BulletPoint1 : Couplings are usually used to connect servo motors, stepper motors, encoders, screw drives, machine platforms, etc. BulletPoint2 : The performance of this coupling is stable and reliable, with good shock absorption, cushioning and electrical insulation properties. BulletPoint3 : Plum coupling shaft is made of high‑strength aluminum, it has excellent carrying capacity and long service life without lubrication. BulletPoint4 : The plum blossom coupling encoder has small radial size and light weight, which is suitable for medium and high‑speed equipment. BulletPoint5 : Flexibility of coupling shaft removes stress between the motor and driving components. ExteriorFinish : Aluminium,Aluminum ExternallyAssignedProductIdentifier : 9195480212751 ItemName : Tyenaza 8mm to 10mm Aluminium Plum Flexible Shaft Coupling, D25 L30 Connector Flexible Coupler for Stepper Motor, Encoder ItemPackageQuantity : 1 ItemTypeKeyword : spider-couplings Manufacturer : Tyenaza Material : Aluminum MetalType : Aluminum NumberOfItems : 1 NumberOfPieces : 1 PartNumber : Tyenazayg3vug4apm ProductDescription : Description: Shaft coupler Often used to connect servo motor, stepper motor, encoder, screw driving, machine platform, etc. Shaft : Approx. 8 x 10mm / 0.3 x 0.4in Length: Approx. 30mm / 1.2in Diameter: Approx. 25mm / 1in Material: Aluminium