1/2 shank Versatile tools for making tenons on round or square stock; Studs up to 3The shear angle design makes these the easiest cutting tools on the market.The open body design allows for easy easy plug release.Made of hardened high carbon steel for long lasting cutting. Description : - Made of hardened high carbon steel for long-lasting cutting. - Open body design allows for easy plug release. - Shear angle design makes these the easiest cutting tools on the market.< /p> - Versatile tools for making tenons on a round or square stock; Studs up to 3' long; - 1/2' shank for drill in press, lathes, horizontal drills.< /p> - To make soft and hard wood plugs. For furniture making, finish carpentry and home shop projects. - Precise ground inside and outside cutting edges cut through the hardest wood while maintaining an extremely sharp cutting edge. Specification: - Material: harden steel to high carbon - Drill hole diameter: 8-40mm - Length: 140mm / 5-1 / 2 inches - Max. socket length: 70mm / 3 inch Package includes: Plug Drill Bits 1 piece