General tools Hole Saw Kit Cutter Set of 6 Pcs 1-1/4 to 2-1/8 can be used in drill machine Hole Saw Kit Cutter Set of 6 Pcs 1-1/4" to 2-1/8" can be used in drill machine Hole saw cutter set of 6 Pcs. Includes: Holesaw cutters size 1-1/4", 1-1/2", 2", 2-1/8" Mandrel: 5/16", Hex Key 3/32" High Carbon Steel Blade with induction hardened teeth. To be used on wood, plastic, mica rubber, leather and other soft materials only.