1Possess good clamping strength, high accuracy and long service life 2Can be connected to drill chuck extension. Safe and fast replacement of tapping chuck 3Torsion type tapping chuck can prevent the tap from breaking, very durable 4Easy to install and disassembly, taps have quickchange devices, saving time and effort, possess simple operation 5Using highspeed steel material, widely used in tapping machines, drilling machines, milling machines, boring machines, electric tools, pneumatic tools and other equipment with CCW spindles Item Type: Tapping Collet Model: GT24-ISO-M8 Material: High speed steel M8 Suitable Tap Size: Shank Diameter x Square: Approx. 6.3 x 5mm / 0.2 x 0.2in Uses: Widely used in tapping machines, drilling machines, milling machines, boring machines, electric tools, pneumatic tools and other equipment with reversible spindles 1 x Tapping Collet