Yiyatoo 11pc Hole Saw Bit Kit Set Holesaw Wood Sheet Metal 3/4" to 2 1/2" 11 pc. Hole Saw Kit w/ Storage Case. Kit includes 8 pc. Carbon steel heat treated hole saws, 2 mandrels, allen wrench, and storage case. Hole saw blade sizes: 3/4", 7/8", 1 1/8", 1 1/2", 1 1/4", 1 3/4", 2", and 2 1/2". Hole saw kit is suitable for wood and thin sheet metal.