Irwin 3041006 Speedbor MAX 6 Piece Spade Bit Set 1/2", 5/8", 3/4", 7/8", 1", and 1-1/4" width
Standard Length Speedbor MAX Spade Bits. 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. Comes with a heavy-duty case.