XtremepowerUS 16 Pcs Hole Saw Kit W/Case Saw Size: 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", 5". Heat treated carbon steel 2 Mandrel pieces 1 Hex key wrench and 1 installation plate Hole saws are suitable for wood, thin alloys & thin sheet-metal Case included