PRODUCT FEATURES:- Cuts through steel, tin, aluminum, fiberglass, wood and plastic- Deep 1-5/8 In cut to go through wood studs- Extra-tough bi-metal blade made of highest grade tool steel- Steam oxide finish for cooler running saw- Extra-thick backplate minimizes vibration- Application: Bi-Metal Hole Saw with 1-5/8 In cutting depth allowing cutting on 2x4 studs. - Extra-thick backplate minimuzes vibration for smoother, easier cutting.- Arbor Size: 1/4, 5/16 or 7/16 In shank size.- Type: Bi-Metal Hole Saw- Cutting Size: 7/8 In