16 Pc Hole Saw Kit w/ Storage Case Kit includes 12 pc. Carbon steel heat treated hole saws, 2 mandrels, 1 Allen wrench. Kit also comes with Door lock installation plate. Includes blade sizes: 3/4", 7/8", 1 1/8", 1 1/4", 1 1/2", 1 3/4", 2", 2 1/2", 3", 3 1/2", 4", and 5" Hole saw kit is suitable for wood and thin sheet metal. Kit stores nicely in the included blow mold storage case.