1、This product is used for tapping chuck with tap for machining internal thread hole on machine tool. It is mainly composed of tap chuck, chuck jacket, compression spring, steel ball and tap jacket. 2、The end surface of the jacket of the chuck is provided with a clamp that meshes with the spindle of the machine tool. 3、The sleeve handle of the jacket is provided with a steel ball, spring and pressing screw that can transmit power to the tapping chuck and act as an overload protection. 4、High durability and has long service life,suitable for long time use. 5、Torsion overload protection can effectively protect the chuck from breaking. 1 x Tapping Machine Chuck Item Type:Tapping Machine ChuckTapping Capacity:M3,M4,M5,M6-8,M10,M12Suitable Tap: M6Tapping Standard: ISONet Weight: 199 g / 7.02 oz(approx.)