Irwin 1882784 Wood Countersink Drill Bit, #12 x 7/32" Thinners Pitch Diameter Limits: H4

Pitch Diameter Limits: H4

For truck loads

when subjected to 312 hr of salt fog spray testing (BHMA A138

Oval Straight-Cut design

Irwin 1882784 Wood Countersink Drill Bit, #12 x 7/32" Thinners Pitch Diameter Limits: H41 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 # : 12 4 cutter head Tapered drill with widened flutes for drilling fast, clean pilot holes Adjustable four cutter counterbore cuts and clears chips quicker for fast,