Ace 4-1/4 in. Bi-Metal Variable Pitch Hole Saw

Bi-metal hole saws have High Speed Steel teeth that are vacuum heat treated for consistent blade hardness. The aggressive 4/6 variable pitch tooth pattern will cut through steel, sheet metal, nail embedded wood, fiberglass, plastics and wood. The 1-3/4" cutting depth allows for complete drilling through a 2x4 in one pass.