Irwin Bi-Metal Hole Saws 3-1/2-Inch
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
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
