Irwin Bi-Metal Hole Saws 1-7/8-Inch Foot & Check Valves It combines patented Advanced Torsion-Drive

It combines patented Advanced Torsion-Drive Technology™ with an ergonomic forward action design to deliver powerful

horizontal or curved surfaces

Tintable with 50% of color formula

New constant tension technology eliminates damaged bathroom walls and keeps it from slipping after adding your shower curtain

Irwin Bi-Metal Hole Saws 1-7/8-Inch Foot & Check Valves It combines patented Advanced Torsion-DriveVariable depth gullets provide more efficient chip clearance4 6 Variable pitch teeth for reduced noise and improved performanceElectron beam weld for stronger, longer lasting teethBi metal construction for toughness and long life