25 x HSSE M35 Cobalt Drill Bits - 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0mm. Drill bit type: M35 steel HSSE. These M35 high speed steel drill bits are manufactured with 5% cobalt for long-lasting performance, abrasion resistance and heat protection.