Specification Brand : Boxwizard 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. IncludedComponents : No ItemName : 8mm X 10mm Flexible Plum Shaft Coupling CNC Stepper Motor Encoder Coupler ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 6 centimeters ItemPackageDimensions_Width : 5 centimeters ItemTypeKeyword : spider-couplings Manufacturer : Boxwizard ModelNumber : Boxwizardgf37tped5w NumberOfItems : 1 PartNumber : Boxwizardgf37tped5w ProductDescription : Spec: Shaft coupler Often used to connect servo motor, stepper motor, encoder, screw driving, machine , etc. Shaft : Approx. 8 x 10mm / 0.3 x 0.4in Length: Approx. 30mm / 1.2in Diameter: Approx. 25mm / 1in Material: Aluminium Included in the Package: 1 x Shaft Coupler