5/16" Cobalt Red Helix™ Drill Bit designed for Hard Metals,PVC and Wood.
- Cobalt alloy for up to 15X Life vs. Black Oxide Drill Bits
- 135° split point for precision start no walking
- Enhanced Tapered Web™ strengthens the bits core
- Variable Helix™ Design for rapid material extraction
- 3-Flat Secure-Grip™ helps keep the bit fixed within the the chuck