Item Type: Tapping Chuck Model: GT24-JIS-M30 Material: High Speed Steel Specification: M30 M30 Suitable Tap Size: Shank Diameter x Square: Approx. 23 x 17mm / 0.9 x 0.7in Application: 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 Chuck 1The tapping chuck has good clamping strength and accuracy, and has a long service life. 2Can be connected to the drill chuck extension rod to prevent the tap from breaking and the operation is safer. 3The chuck is made of high-speed steel, which is strong and durable and not easily deformed. 4Installation and disassembly of tapping chuck, quick-change device, saving time and effort. 5The torsion can be adjusted to avoid breakage when encountering strong tapping.