Irwin HSS Cobalt metal drill bit 3.5 x 70 mm

HSS Cobalt drill bits are made for drilling stainless steel. Thanks to the cobalt alloy steel blade, the heat and wear resistance is way higher, which extends the tool's lifespan. The industrial-grade milled helix ensures the sharpest possible drilling result and efficient chip removal.

135 degree split point
Best possible durability and lower power needs
Industrial-grade milled helix
Cobalt alloy steel drill bit shank
Gold-colored heat treatment