Irwin 373314BX 373314BX - BI-MTL 3-1/4" HOLESAW

373314BX Boxed Bi-Metal Hole Saw - 3-1/4" (83 mm) Diameter - 1/Box. Standard Features: Variable depth gullets provide more efficient chip clearance. 4/6 Variable pitch teeth for reduced noise and improved performance. Electron beam weld for stronger, longer lasting teeth. Bi-metal construction for toughness and long life. Cutting Diameter: 3-1/4" (83 mm). Pipe Entrance: NA. Pipe Tap: 3". Material: Bi-Metal. Recommended RPM (In Steel): 105.