Screw machine drill bit, standard type, list number 1000, is made of cobalt steel. Features include number of pieces 1, heavy duty grade, TiN finish, notched point, drill point 130 degree, wire size #31, decimal equivalent 0.1200, flute length 7/8", overall length 2-5/16" and shank diameter 3/16". Application - for alloy, carbon and tool steel, aluminum, cast iron, high nickel alloy, stainless steel, titanium and hardened steel under 35 HrC..