Specification Brand : KUAOXK BulletPoint1 : 1. Made of aluminum alloy, lightweight, anti-oxidation, CNC cutting, outstanding appearance, high-precision workmanship, and long service life. BulletPoint2 : 2. Provides torque transmission and alignment, efficient coupling design. BulletPoint3 : 3. Widely used: used to transmit motion, widely used in small CNC machine tools, 3D printer Z-axis couplings, etc. BulletPoint4 : FUNCTION: Flange Shaft Coupling can fix one shaft to a plane and install other parts on the shaft easily. Double connection points fasten the coupler tightly.the machine is not easy to separate during operation. BulletPoint5 : NOTE: Please confirm the size of your stepper motor shaft before purchasing Color : One Color DriveSystem : External Hex ExteriorFinish : Steel ExternallyAssignedProductIdentifier : 8505433565055 FinishType : Silver GpsrSafetyAttestation : 1 GradeRating : Industrial ItemName : Rigid Coupling,Stainless Steel Rigid Coupling 1PCS D30L35 Motor Shaft Coupler Flexible Coupling CNC Stepper Servo Motor(10mm to 14mm) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : KUAOXK Material : Metal Material1 : Aluminum Material2 : Iron MeasurementSystem1 : Metric MeasurementSystem2 : Inch MetalType : Aluminum ModelNumber : KUAOXK NumberOfItems : 1 NumberOfPieces : 1 PartNumber : KUAOXK ProductDescription : 1. The flexibility of the coupling eliminates stress between the motor and the driven components. 2. High strength, strong plasticity, good heat resistance and good toughness. 3. A shaft coupling is a coupling that connects two shafts together to transfer torque and rotational motion.