Cut clean, smooth holes in drywall, plaster, or wood. Includes 13 Sizes: 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-1/2", 2", 2-1/2", 3", 3-1/2", 4" & 5" 1/4" Mandrel, 3/8" Mandrel, Mandrel Drive Plate, 1/4" Drill Bit Hex Wrench, Blow Mold Case.