Hole Saw Maintenance Kit, Carbide Grit , Carbide Grit Cutting Edge with a Hardened Steel Backer, Number of Pieces 13, Use Arbor 4XJ18, 4XJ22, 4XJ24, Cuts Wood, Plastic, Or Any Machinable Metal, Includes Hole Saws: 3/4, 7/8, 1-1/8, 1-3/8, 1-1/2, 1-3/4, 2, 2-1/4, 2-1/2 In. Dia., (3) Arbors, (1) 12 In. Ext. with Carbide-Tipped 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.