Irwin Speedbor 6 In. Quick Change Auger Bit Grinding & Cutting Wheels 3/8-Inch FPT Inlet x 1/4-Inch

3/8-Inch FPT Inlet x 1/4-Inch FPT Outlet

Reduced shank fits 3/8' and larger drills and drill presses

but are tough enough to be used with hammer drills

extension wand

Liner lock for quick one-handed operation

Irwin Speedbor 6 In. Quick Change Auger Bit Grinding & Cutting Wheels 3/8-Inch FPT Inlet x 1/4-InchSpeedbor MAX is the fastest Speedbor. Tri flute design for faster chip ejection. There are 3 cutting edges for added durability and the full screw tip allows the bit to self feed for easier pull through. 1 4' quick change hex shank prevents slipping in drill chucks and bit extensions. Fits all standard quick change chucks and adapters.