Designed for cutting round holes in ceilings, walls, and floors without making a mess, the AHC-19 is the perfect tool for installing recessed speakers, lighting, or other round objects.Product Includes:1 Cover, 1 Adjustable Hole Cutter, 1 Vacuum Port, 1 Cap, 1 Nut, 1 Set of Replacement Blades, 1 Hex Key, and a Rugged Carry Case.Main FeaturesRubber gasket provides surface protection against damage, tight seal against flat surfaces, and prevents fallout from debrisCompression spring absorbs vibrations while cuttingCan be used with any variable-speed drillPower drill and vacuum not included with hole cutter