... tool accessories, drill bits series, We are producer of drill bit series as electrical 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 ... 9341,HSS4341,HSS4241,high carbon steel 13-pc HSS drill bit,white color,metal box