Irwin Bi-Metal Hole Saws 3-1/2-Inch Size:3-1/2-Inch Thick wall construction and heavy-duty

Thick wall construction and heavy-duty galvanized fittings ensure long lasting durability

Finish Yellow Chromate Weight Each (lb) 22 lb Working Load Limit 4700 lb Size/Trade Size 5/16 in x 20 ft Pieces Per Package 1

It features epoxy-coated probe to prevent corrosion buildup

For 3/8" and 1/2" drill chucks

and plaster

Irwin Bi-Metal Hole Saws 3-1/2-Inch Size:3-1/2-Inch Thick wall construction and heavy-dutyVariable 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