Milwaukee 31/63" Red Helix Cobalt Drill Bit 48892328. Cobalt Alloy Construction keeps the drill bit from overheating, increasing durability in hard metal. 15x Life compared to Black Oxide Drill Bits.
- Four cutting edges for faster drilling into hardened materials.
- Creates smaller chips to help prevent from burning out.
- Wider core towards the shank of the drill bit.
- Helps prevent the bit from breaking towards the shank.
- Aggressive flute geometry for rapid material ejection.