NEW HOLE SAW KIT SET OF 16 PCS CASE DRILL BIT MANDRELS ! 16 Piece Hole Saw Kit for Wood 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" - 5" hole saws thin alloys. Hole saws are suitable for wood, thin alloys & thin sheetmetal