Our RED HELIX™ Cobalt Drill Bits are engineered for extreme durability and longer life in hard metal applications. The MILWAUKEE® Cobalt drill bits are designed with a VARIABLE HELIX™ that includes an aggressive 35° Helix Angle which ends at 15°. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes in Hard Metal, PVC and wood. The tapered drill bits' new ENHANCED TAPERED WEB™ strengthens the bits’ cores to increase flute durability. Our cobalt twist drill bits are ideal for tough applications, providing up to 15X life vs. Black Oxide Drill Bits™. Choose from single RED HELIX™ Cobalt drill bit sizes ranging from 1/16" to 1/2" or Milwaukee drill bit sets.