Bosch Cobalt M42 Drill Bit Set with Case (21-Piece)

Bosch Cobalt M42 Metal Drill Bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core cobalt bits deliver 10X life versus standard bits, are jobber length and withstand high-heat applications. The thick web-helix design delivers fast material removal and increased stability. These cobalt drill bits provide superior performance in stainless steel and can be used to drill cast iron, titanium and other hard or abrasive metals.