Milwaukee Red Helix 21/64 In. Cobalt Drill Bit Garage Door Seal & Stops Head is fully heat-treated for

Head is fully heat-treated for enhanced durability

4" head length

It includes a tapered blade for the proper sturdiness and flexibility

industrial grade steel

Milwaukee Red Helix 21/64 In. Cobalt Drill Bit Garage Door Seal & Stops Head is fully heat-treated forMilwaukee Cobalt RED HELIX Drill Bits are engineered for extreme durability and long life in hard metal applications. Designed with a Variable Helix that includes an aggressive 35 degree Helix Angle which ends at 15 degree, the Cobalt bits with RED HELIX provide Rapid Chip Removal limiting heat buildup to Stay Sharper Longer. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes. Ideal for tough