Irwin 373138BX Hole Saw, 1-3/8 in Dia, 3/8 in Arbor, 4/6 TPI, HSS Cutting Edge

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.

• Variable depth gullets provide more efficient chip clearance
• 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