IRWIN 15-Piece Cobalt Alloy Steel Drill Bit Set 63137 Fractional Straight Shank Jobber Length for Drilling Hardened Metal and Abrasive Materials Sanders 6 cm) Overall Width 1

6 cm) Overall Width 1

Pair it with transfer switches

0 inches Primary Application Substrate Sheet Metal

This ensures the 5° swing arc remains efficient and prevents side-loading

this wrench is perfect for engine work

IRWIN 15-Piece Cobalt Alloy Steel Drill Bit Set 63137 Fractional Straight Shank Jobber Length for Drilling Hardened Metal and Abrasive Materials Sanders 6 cm) Overall Width 1Conquer Hardened Steel: The Cobalt Drill Bit Set for Extreme Metalworking When high speed steel fails, you need **Cobalt**. This IRWIN 15 Piece Cobalt Alloy Steel Drill Bit Set (63137) is engineered with premium M 42 5% Cobalt Alloy Steel, providing **superior abrasive resistance** and high heat tolerance. This makes it the ideal solution for drilling into **hardened steel**, stainless steel, cast iron, and other tough, high tensile strength materials