This Bosch Cobalt M42 Metal Drill Bits are engineered with upgraded M42 alloy, containing 8% cobalt. Bits that are 1/8 In. and larger feature a split point; bits 3/16 In. and larger feature a three-flat shank, for better bit grip.

BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

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 vs. Standard bits

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 …

Our cobalt drill bits meet ANSI standards, are available in sizes up to 1/2″, and feature a heavy-duty 135-degree split point design for quick drilling. All cobalt drill bits 3/16″ and up have ground 3-flat shanks to prevent slippage. DBW cobalt drill bits for hardened steel are a great choice for cutting through weld seams.

Cobalt M42 drill bit – provides upgraded M42 cobalt jobber-length bits designed for durability. Enhanced M42 alloy material – contains 8% cobalt alloy that delivers 10X life vs standard bits. High-heat resistant bits – withstand high-temperature applications for extended periods of time

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% …

The #1-#60 M42 cobalt drill bit set is an essential tool for any DIY enthusiast or professional. With an impressive range, our selection includes cobalt double-ended drill bits, aircraft extension drill bits, and the T-200 super-sonic drill bit set.

M42 cobalt drill bits are a specific variety of cobalt drill bits comprised of 8 percent cobalt and M42 high-speed steel, and they offer superior hardness and heat resistance. Large cobalt drill bits can withstand the rigors of drilling into particularly hard, abrasive materials without breaking or getting excessively worn out.

Precision ground metric drill bits made from M42 high speed steel bars with 8% cobalt achieving a hardness of some 63.5 - 65 Rockwell. The Cobalt allows the drill bits to hold their hardness at higher temperatures. Intended for use on alloy and hardened s