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Irwin
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.
Century Drill And Tool Step Drill 8 Steps #20 9/16″-1″ Hss Zirconium Coated Step Depth 1/8″ Shank 3/8″
Century Drill And Tool Step Drill 9 Steps #3 1/4″-3/4″ Hss Zirconium Coated Step Depth 1/8″ Shank 3/8″
Irwin 61112 3/16 Masonry Bit
Century Drill And Tool Tapcon Masonry Drill Bit 5/32″ Cutting Length 3″ Overall 4-1/2″ Shank 5/32″
Century Drill And Tool Step Drill 12 Steps #4 3/16″-7/8″ Hss Zirconium Coated Step Depth 1/8″ Shank 3/8″
