16PC Hole Saw Drill Bit Kit w/ Mandrels Saws w/ Case Wood Plastic Sheet Metal Heat treated carbon steel 2 Mandrel pieces Cut perfect circles with these tools 1 Hex key wrench and 1 installation plate Saw 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"