Yosoo 1 X HOLE SAW SET - 16 pcs Carbon Steel Metal Wood Hole Saw Kit Circle Cutter Round Drill Bits in Case with Mandrels and Install Plate for Door Knob Lock Heat Treated Carbon Steel - For hard and soft woods, plastic, plasterboard Contains 12 hole saws 19, 22, 25, 32, 38, 44, 51, 64, 76, 89, 102 and 127mm Includes Hex Key and Installation Plate Comes with a carry case 2 Mandrels