Irwin 7/8" Standard Length Speedbor MAX Spade Bit - 3041005

The Fastest Speedbor spade bit ever. Tri-Flute design for faster chip ejection. Cutting spurs have 3 cutting edges for added durability. Full screw tip allows bit to self feed. Grooved hex shank prevents slipping in drill chuck or bit extension. Fits all standard 1/4" quick change chucks.