Irwin 4-Piece Wood Countersink Bit Set Outdoor Living & Patio PermaGrip steel connector adds strength

PermaGrip steel connector adds strength and stay tight to provide the ultimate in head to fiberglass handle connection

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Irwin 4-Piece Wood Countersink Bit Set Outdoor Living & Patio PermaGrip steel connector adds strengthReplacement 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