Irwin 4-Piece Wood Countersink Bit Set

Replacement tapered drill bits with widened flutes for drilling fast, clean pilot holes. Adjustable 4-cutter counterbore cuts and clears chips quicker for fast, smooth countersink or counterbore drilling. Attaches and adjusts with 2 hex screws. Counterbore attaches to flat on shank for a more secure fit. Adjustable stop collar attaches to counterbore for controlling countersink depth. 1/4" quick change shank reduces slipping in standard chucks and is compatible with impact drivers. Set includes 1 each: #6 Model No. 1882787 (SKU 301654), #8 Model No. 1882788 (SKU 301659), #10 Model No. 1882789 (SKU 301661), and 1 stop collar.

• Tapered drill with widened flutes for drilling fast, clean pilot holes and ensures tight fit for screws
• Adjustable four-cutter counter bore cuts and clears chips quicker for fast, smooth countersinking
• Counter bore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth
• 1/4" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drills
• Adjustable stop collar attaches to counter bore with two hex screws for a secure fit and can be adjusted for desired counter bore depth