12 Pcs,1/4", Black And Gold Coated Twist Drill Bits, Pack In Plastic Bag

High Speed Steel: Twist Design: Notice: Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.

• Bright finish: Classic M2 High Speed Steel construction with Bright Finish for proven capability and durability.
• Strength & Hardness: Made with HSS M2 steel, Rock wall Hardness Level HRC 62-63.
• Package & Size: 12 Pieces in a plastic bag, Diameter 5/16 inch, Total length 4 inch, Working length 2-3/4 inch.
• Professional & DIY Use: For use on metal, wood & plastics. Not For Use On Concrete / Masonry / Stainless Steel. 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.