Bosch 14 pc. Cobalt M42 Drill Bit Set In Case. The image shows a Bosch 14-Piece Cobalt M42 Metal Drill Bit Set, encased in a clear plastic container with a dark blue label at the top featuring the Bosch logo. Inside, several golden-hued drill bits of varying sizes are visible, and the packaging highlights features like "10x LIFE" and "8% Cobalt," along with a "NoSkate Tip" and that the set is suitable for drilling in stainless steel, wood, and PVC.
Bosch

Bosch 14-Piece Cobalt M42 Drill Bit Set 8% Alloy for Metal Stainless Steel High-Heat Applications Surface-Hardened Tips Thick Web Helix Plastic Case CO14B

Only 1 left
SKU: CO14B
$42.50
Description

Engineered for Metal: Bosch Cobalt M42 Bits for Maximum Durability and Heat Resistance

When your job demands precision drilling through stainless steel, cast iron, or other abrasive metals, the Bosch CO14B 14-Piece Cobalt M42 Drill Bit Set delivers unmatched performance. Featuring an upgraded M42 alloy with 8% cobalt content, these bits offer up to 10X longer life than standard high-speed steel bits—making them ideal for fabrication shops, industrial maintenance, and serious DIYers.

The surface-hardened tips penetrate tough materials with ease, while the thick web-helix design adds stability and reduces breakage under load. These bits are built to withstand high temperatures, making them perfect for extended drilling sessions in demanding environments. Whether you're working with hardened steel or layered composites, this set is your go-to solution for clean, accurate holes and long-term reliability.

What's Included

  • (1) 1/16"
  • (1) 5/64"
  • (1) 3/32"
  • (1) 7/64"
  • (2) 1/8"
  • (1) 9/64"
  • (1) 5/32"
  • (1) 3/16"
  • (1) 7/32"
  • (1) 1/4"
  • (1) 5/16"
  • (1) 3/8"
  • (1) 1/2"
  • (1) Plastic Carrying Case

Specifications

Material M42 Cobalt Alloy (8% Cobalt)
Piece Count 14
Case Type Plastic
Tip Design Surface-Hardened
Helix Style Thick Web Helix
Heat Resistance High-temperature rated

Key Features

  • Upgraded M42 alloy with 8% cobalt for extreme durability
  • Surface-hardened tips for penetrating tough metals
  • Thick web-helix design reduces breakage and enhances stability
  • Ideal for stainless steel, cast iron, and high-heat drilling applications
  • Includes a wide range of fractional sizes for versatile use

Step up your metalworking game with Bosch’s premium cobalt drill bit set—built for professionals who demand precision, longevity, and performance under pressure.