2560-1493 Features: -Double flute straight drill bit.-Cuts smoother than other bits because of the precise shear and hook angles.-End of bit relief allows for fast lunging.-Cuts all composite materials, plywoods, hardwoods and softwoods.-Use on CNC and other automatic routers as well as hand held and table mounted portable routers.-1/2" overall diameter.-3/4" Carbide height.-1/4" shank diameter.-2-1/4" overall length.-Carded.