Specification Brand : Tyenaza BulletPoint1 : Can be used for motor etc BulletPoint2 : This joint or coupling connects rods whose axes are inclined to each other. BulletPoint3 : Made of premium metal material, it is and has long service life. BulletPoint4 : It is commonly used for shafts that transmit rotary motion. BulletPoint5 : Widely used for connecting model cars, model ships, robots, etc. Color : #653 ExternallyAssignedProductIdentifier : 7446781116456 ItemName : Tyenaza 4pcs Universal Joint Shaft Coupling with Screws, Shaft Coupling Motor Connector DIY Steering Length 23mm OD 11mm (Inner Diameter 5 * 6mm) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 3 centimeters ItemTypeKeyword : pin-and-block-universal-joints Manufacturer : Tyenaza Material : Metal ModelName : Tyenazakzx4cibw13-02 ModelNumber : Tyenazakzx4cibw13-02 NumberOfItems : 1 PartNumber : Tyenazakzx4cibw13-02 ProductDescription : Specification: Material: Nickle plated iron Inner Diameter: 4*6mm, 5*6mm, 6*6mm, 3*5mm, 4*5mm, 5*5mm (Optional) Length: 23mm / 0.9in Outer Diameter: 11mm / 0.4in Weight: 42g~46g / 1.5oz~1.6oz (approx.)