Irwin 4-Piece Wood Countersink Bit Set Rotary Tools & Accessories and T30 x 2"

and T30 x 2"

Single concave flute design creates perfectly round holes in thin materials including steel

FULL CONTROL AND BALANCE with curved handle design and padded thumb rest for comfort

1/4' shank

rafts and air mattresses

Irwin 4-Piece Wood Countersink Bit Set Rotary Tools & Accessories and T30 x 2"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