Specification Brand : Befenybay BulletPoint1 : Size:L30mm x D25mm/1.18inch x 0.98inch( L*D) Bore Diameter: 8mm to 8mm / 0.31inch to 0.31inch BulletPoint2 : Material: Aluminum alloy Type: Plum shaped BulletPoint3 : Super torque can absorb vibration, appropriate a large torque transmission.High hardness,and excellent response,not easy to loosen BulletPoint4 : Flexibility of coupling shaft removes stress between the motor and driving components BulletPoint5 : The shaft couplers are mainly used for CNC machines,servo motors, spindle, step motor etc ExteriorFinish : Silver ExternallyAssignedProductIdentifier1 : 303277058294 ExternallyAssignedProductIdentifier2 : 0303277058294 ExternallyAssignedProductIdentifier3 : 00685144381460 GpsrSafetyAttestation : 1 GradeRating : aerospace ItemName : Befenybay 2PCS 8mm to 8mm Aluminium Plum Flexible Shaft Coupling D25 L30 8x8mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor(8x8mm) ItemPackageDimensions_Height : 6.096 centimeters ItemPackageDimensions_Length : 2.286 centimeters ItemPackageDimensions_Width : 5.08 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spider-couplings Manufacturer : befenybay Material : Aluminum Alloy, Polyurethane MetalType : Aluminum ModelNumber : BE-048-6-fba NumberOfItems : 2 NumberOfPieces : 2 PartNumber : BE-048-6-fba ProductDescription : PLEASE NOTE: The shaft coupler is not elastic, can not modify the concentricity. Shaft must be located in a straight line. If your equipment is eccentric already, then it will make noise and cause off-centering. Please be cautious before your final purchasing, thank you. Product Name: Shaft Plum Coupling Type: Plum Shaped Shaft Usage: 8mm to 8mm / 0.31inch to 0.31inch Size: :L30mm x D25mm/1.18inch x 0.98inch( L*D) Material: Aluminum Alloy,Polyurethane Main Color: Silver Tone,Red Weight: 30.4g x 2pcs The shaft couplers are mainly used for CNC machines,servo motors, spindle, step motor etc Package Content: 2 x Shaft Plum coupling 1x Allen Key