Plumber Hole Saw Kit, Bi-metal Speedslot(TM), Number of Pieces 17, Teeth None, Teeth per Inch Variable Pitch, Wood & Metal, Includes 3/4 In., 7/8 In., 1-1/8 In., 1-1/2 In., 1-3/4 In., 2-1/4 In., 2-9/16 In., 3 In., 3-1/2 In., 4 In., 4-1/4 In., 4-1/2 In., 2l And 5l Snap Back Arbors, Two 4321 And One 56pd Pilot Drills
Hole Saw Kits- Bimetal kits have M3 high speed steel cutting edge with a hardened steel backer. Carbide kits have a carbide-tipped or carbide grit cutting edge with a hardened steel backer.