Features 1、Widely used in tapping machines, drilling machines, milling machines, boring machines, electric tools, pneumatic tools and other equipment with reversible spindles. 2、This tapping machine adapter has good clamping strength, accuracy and long service life. 3、Comes with safe and fast replacement, tapping chuck can be connected to drill chuck extension. 4、Installation and disassembly of tapping chucks, taps have quick‑change devices, saving time and effort, and simple operation. 5、The high speed steel torsion‑type tapping chuck can prevent the tap from breaking. Specification Item Type: Tapping Chuck Model: GT24-ISO-M30 Material: High Speed Steel Suitable Tap Size: Approx. 20 x 16mm / 0.8 x 0.6in (shank diameter x square) Uses: Widely used in tapping machines, drilling machines, milling machines, boring machines, electric tools, pneumatic tools and other equipment with reversible spindles Package List 1 x Tapping Collet Chuck