Irwin #4 - 1/8 In. Wood Countersink Unions Top cap is impact resistant

Top cap is impact resistant and easy to remove for troubleshooting

covers twice the area

7/8" & 1" drive-in

Contains copper sulfate

and repair applications

Irwin #4 - 1/8 In. Wood Countersink Unions Top cap is impact resistantReplacement 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' hex quick change shank reduces slipping in standard chucks and