1/2 shank Versatile tools for making tenons on round or square stock; Studs up to 3 Shear angle design makes these the easiest cutting tools on the market. Open body design allows for easy plug release. Manufactured Made from hardened high carbon steel for long lasting cutting. Description: - Made from hardened high carbon steel for long lasting cutting. - Made from hardened high carbon steel for long lasting cutting. br /> - Open body design allows for easy clog clearance. - Shear angle design makes these the easiest cutting tools on the market.br /> - Versatile tools for making tenons on a round or square stock; Dowels up to 3 long; - 1/2 shank for drill press, lathes, horizontal drills. - For making softwood plugs and hard.For furniture making, finish carpentry and home shop projects. - Precise ground internal and external 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.socket length: 70mm / 3 inch Package includes: 1 piece Plug Drill Bits