Vermont American 23155 45-Degree Carbide Tipped Chamfer Router Bit, 1/2-Inch Ball Bearing 2-Flute 1/4-Inch Shank Razor sharp cutting edge diamond honed for smooth cuts Triple tempered shank for maximum durability Industrial micrograin carbide for smooth cut Decorative bevel edging Has concealed joints Razor sharp cutting edge diamond honed for smooth cuts Triple tempered shank for maximum durability Industrial micrograin carbide for smooth cut decorative bevel edging and concealed joints