Irwin 1882630 Wood Countersink Drill Bit, #4 x 7/64

1/4 quick change shank reduces slipping in standard chucks and is compatible with all 1/4 quick change chucks. including impact drills.Counter bore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth.

Highlights:

• Bit # : 4
• Tapered drill with widened flutes for drilling fast. clean pilot holes
• Adjustable four-cutter counterbore cuts and clears chips quicker for fast. smooth countersinking