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 : [Lubrication- and Convenient] - Need no lubrication, making it convenient and quiet to use. BulletPoint5 : [Stable and Reliable Performance] - Provides good vibration damping, buffering, and electrical insulation performance. Color : One Color Department : Unisex Adult ExternallyAssignedProductIdentifier : 8505433541462 ItemName : Rigid Coupling,Stainless Steel Rigid Coupling 1pcs D19L25 Aluminium CNC Motor Shaft Flexible Coupling(7 X 10) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : set-screw-couplings Manufacturer : KUAOXK Material : Metal ModelName : SMTSEC 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.