Milwaukee® Thunderbolt® 1/4" Dia X 4" High Speed Steel Hole Saw Pilot Drill Bit with a 1/4" three-flat shank features a parabolic flute that provides quicker chip clearance. Bit has a Thunderbolt® tapered web that offers durability and is suitable for all saw sizes. The shank does not slip in arbor or chuck and the 135 deg split point renders accurate hole placement.
