Irwin 4-Piece Wood Countersink Bit Set Brand_Amflo Maximum Door Weight

Maximum Door Weight

Heavy-gauge billet aluminum alloy construction is die-cast for increased accuracy over laser-etched and extruded stamped rafter squares

for increasing the safety of wooden fences and decks

Flexible molded shell gives better support

insects and nematodes

Irwin 4-Piece Wood Countersink Bit Set Brand_Amflo Maximum Door WeightReplacement 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