12 PCS 5/16' HSS Black and Gold Coated Twist Drill Bits, Metal drill, ideal for drilling on mild steel, copper, Aluminum, Zinc alloy etc. Pack in Plastic Bag
- Cobalt drill bits: Classic M2 High Speed Steel construction with Black and Gold finish for proven capability and durability..
- Hardness: M2 Twist drill bits’ Rock wall Hardness Level HRC 62-63..
- Package & Size: 12 Pieces drill bits in a plastic bag, Diameter 5/16 inch, Total length 4-1/2 inch, Working length 3-3/16 inch..
- Professional & DIY Use: For use on metal, wood & plastics. Not For Use On Concrete / Masonry. Perfect match for workshop or service vehicles..
- 135 Tip & Twist Design: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster..