IRWIN 15-Piece Cobalt Alloy Steel Drill Bit Set 63137 Fractional Straight Shank Jobber Length for Drilling Hardened Metal and Abrasive Materials Sanders this wrench is perfect for

this wrench is perfect for engine work

ensuring immediate slug ejection at the bottom of the pass and eliminating premature micro-chipping along the outer cutting margins

Blade Orientation: Blade-Left

0 inches Primary Application Substrate Sheet Metal

Forged from high-grade alloy steel with a bright

IRWIN 15-Piece Cobalt Alloy Steel Drill Bit Set 63137 Fractional Straight Shank Jobber Length for Drilling Hardened Metal and Abrasive Materials Sanders this wrench is perfect forConquer 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