Feature: 1. The product has good clamping strength, high precision and long service life 2. Connected to the drill chuck extension. Safe and quick replacement of tapping chuck 3. Twist type tapping chuck can prevent the tap from breaking, very durable 4. The taps have quick change devices, save time and effort, own simple operation . Easy to install and disassemble 5. Adopt high speed steel material, widely used in tapping machines, drilling machines, milling machines, boring machines, power tools, pneumatic tools and other equipment with CCW spindles Specification: Type Item: Tapping Collet Model: GT24-ISO-M18 Material: High Speed Steel Specifications: M18 M18 Suitable Tapping Size: Shank Dia x Square: Approx. 14 x 11.2mm / 0.6 x 0.4in Uses: widely used in tapping machines, drilling machines, milling machines, boring machines, power tools, pneumatic tools and other equipment with reversible spindlesHow to use: 1. Press the knurled position of the handle body with the thumb of your left hand and pull it in the direction of arrow 2. The handle body is aligned with the concave and convex keys of the chuck, install the chuck into the shank body 3. When disassembling the chuck, pinch the thumb wrench with your hand and pull the chuck back and it will be ejected automatically Installation steps: 1. Thumbs press down the spring 2. Put the tap into the chuck hole and release your thumb Package List: 1 x Tapping Collet