... drill set , material : COBALT,HSS 9341,HSS4341,HSS4241,high carbon steel Product DescriptionPower tool accessories, drill bits series, We are producer of drill bit ... twist drillbits, and combined dirll bit sets. 13-pc H. S. S. TITANIUM TWIST DRILL SET: Point Angle: 118/135 material ... : COBALT,HSS 9341,HSS4341,HSS4241,high carbon steel 13-pc HSS drill bit,white ...