StarSide 11Pcs Hole Saw Set Mandrels Hex Wrench Carbon Steel Saw Wood Metal Door Drilling Cutting Tool Hole saw sizes : 3/4" - 19mm, 7/8"- 22mm, 1 1/8"-28mm, 1 1/4"- 32mm, 1 1/2"-38mm, 1 1/3"- 44mm, 2"- 51mm, 2 1/2"- 64mm It includes 8 carbon steel hole saws, 2 arbors with pilot drill and Allen key. Suitable for cutting wood, thin sheet metal and thin alloys. Well Organized in a Convenient Plastic Storage Case High speed steel teeth for fast and clean cuts