4 PIECE SOLID CARBIDE DRILL BITS ZBDR4 | eBaydiy Tools

For drilling hardened materials, sized for acceptance of Matco straight flute extractors SE1, SE2, SE3, SE4
Carbide drills can drill hardened materials not achievable with conventional high speed steel or cobalt bits
Carbide drills will operate at higher speeds and feeds than conventional HSS or cobalt drills when used in drill press applications