The Milwaukee Red Helix Cobalt 13/32 in. Drill Bit is engineered for extreme durability and long life in hard metal applications. The Milwaukee Cobalt drill bits are designed with a Variable Helix that includes an aggressive 35-degree Helix Angle which ends at 15 degrees. The tapered drill bits feature a new Enhanced Tapered Web that strengthens the bit's core to increase flute durability.Find the COBALT DRILL BIT 13/32 at Ace.