Tail of 1/2 Versatile tools for making tenons on round or square stock; Studs up to 3 The shear angle design makes them the easiest cutting tools on the market. The open body design allows easy release of the cap. Made of hardened high carbon steel for a long lasting cut. Size: 20mm Description: - Made of hardened high carbon steel for a long lasting cut. - Open body design allows for easy cap release. - The shear angle design makes them the easiest cutting tools on the market. - Versatile tools for making tenons on round or square stock; Studs up to 3 " long; - 1/2 " shank for drill in press, lathes, horizontal drills. - To make soft and hard wood corks. For furniture making, finish carpentry and home store projects. - Precise ground inside and outside cutting edges cut through the hardest wood while maintaining an extremely sharp edge. specification: - Material: harden high carbon steel - Drill hole diameter: 8-40mm - Length: 140mm / 5-1 / 2 inches - Max. grip length: 70mm / 3 inch The package includes: Cap Drill Bits 1 piece