13pc HSS Twist drill set , material : COBALT,HSS 9341,HSS4341,HSS4241,high carbon ... hammer drillbits, wood working drill bits, masonry drill bits, HSS twist drillbits, and combined dirll bit sets. 13-pc H. S ... . S. TITANIUM TWIST DRILL SET: Point Angle: 118/135 material : COBALT,HSS 9341 ... ,HSS4241,high carbon steel 13-pc HSS drill bit,white color,metal box