Black and Gold Twist Drill Bit Set (21-Piece)

Are you frustrated with drill bits that lose their sharpness quickly and break with minimal pressure? Upgrade to high-quality black oxide drill bits. These heavy-duty twist-drill bits are crafted from extremely tough, durable black oxide, providing exceptional durability and strength. Each bit is designed with a 135-degree split point to improve hole-drilling efficiency, allowing for quick starts and producing clean, burr-free holes. Suitable for use on wood, metal, plastics, and fiberglass.

• 21-piece collection

• 135-degree split point drills upon contact and helps prevent walking

• Parabolic flute design enhances chip removal in metal and wood drilling tasks

• Coated with black oxide for increased wear resistance

• Helix angle of 31 degrees reduces the aggressiveness of a true parabolic flute