Irwin 4-Piece Wood Countersink Bit Set Pack options:Pack of 1 %search_data%N830-520

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and neoprene rubber mounting pads

Irwin 4-Piece Wood Countersink Bit Set Pack options:Pack of 1 %search_data%N830-520Replacement 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