... steel Product DescriptionPower tool accessories, drill bits series, We are producer of drill bit series as electrical hammer drillbits, ... working drill bits, masonry drill bits, HSS twist drillbits, and combined dirll bit sets. 29-pc H. S. S. TITANIUM TWIST DRILL ... SET: Point Angle: 118/135 material : COBALT,HSS 9341,HSS4341,HSS4241,high carbon steel 29-pc HSS drill bit,titanium ...