Cobalt M42 Twist Drill Bit Set with Case (14-Piece) by Bosch

Bosch Cobalt M42 Metal Drill Bits are engineered with upgraded M42 alloy, containing 8% cobalt. These hard-core cobalt bits deliver 10X life with 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.

• Cobalt M42 drill bit provides upgraded M42 cobalt jobber-length bits designed for durability, high heat resistance and hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
• Enhanced M42 alloy material contains 8% cobalt alloy that delivers 10X life with standard bits
• High-heat resistant bits withstand high-temperature applications for extended periods of time
• Thick web-helix design provides additional stability in tough applications
• Surface-hardened tip penetrates tough abrasive materials
• Split points on bits 1/8 in. and larger allow for easy starts with no skating, eliminating the need for a center punch
• 3-flat shank on bits 3/16 in. and larger deliver better bit grip
• Includes: one 1/16 in., one 5/64 in., one 3/32 in., one 7/64 in., two 1/8 in., one 9/64 in., one 5/32 in., one 3/16 in., one 7/32 in., one 1/4 in., one 5/16 in., one 3/8 in., one 1/2 in.