1/4" COBALT RED HELIX™ Drill Bit

The Milwaukee 48-89-2313 is a 1/4" RED HELIX™ cobalt drill bit engineered for high-performance drilling in tough materials, especially stainless steel and hardened metals.

Key Features

• Cobalt Alloy Construction – Designed for extreme heat resistance and up to 10–15× longer life vs. standard black oxide bits
• RED HELIX™ Variable Flute Design – Aggressive 35° entry angle transitioning to 15° for faster chip removal and reduced heat buildup
• QUADEDGE™ 135° Split Point Tip – Starts on contact and helps prevent walking for accurate hole placement
• Enhanced Tapered Web – Strengthens the core to improve durability under heavy load
• 3-Flat Secure-Grip Shank – Helps prevent slipping in the drill chuck

What It’s Best For

• Stainless steel drilling (primary use)
• Hardened metals and structural steel
• PVC and plastic
• Heavy-duty shop or fabrication work