Irwin Speedbor 3041003 Speed Bit Set, Tri-Flute Flute, Hex Shank

Tri-flute design for faster chip ejection cutting spurs have three cutting edges for added durability. Full screw tip allows bit to self-feed. Grooved hex shank prevents slipping in drill chuck. Fits all standard 1/4 in quick change chucks. Includes one each 5/8 in, 3/4 in, 1 in and case.

• Tri-lobe design helps provide a secure grip for ease-of-use
• Cutting spurs have three cutting edges for added durability
• The material is rendered from the hearty shin bone of Zebu cattle, a substance tough enough for the rigors of case knife demands
• Full screw tip allows bit to self-feed
• Grooved hex shank prevents slipping in drill chuck or bit extension
• Fits all standard 1/4 in quick change chucks