1This tapping collet has good clamping strength, accuracy and long service life. 2Safe and fast replacement of tapping chuck, can be connected to drill chuck extension, easy to use. 3The tapping chuck is easy to install and remove, and the taps have quickchange devices, which saves time and effort. 4The use of torsion tapping chuck can prevent the tap from breaking and has good performance. 5Widely used, mainly used for CNC machine tools, engraving machines and other equipment. Item Type: Tapping Collet Material: High speed steel Specification: M12 Shank Diameter x Square Hole: Approx. 8.5 x 6.5mm / 0.33 x 0.26in Product Category: CNC Tool System: Japanese standard 1 x Tapping Collet