One size fits all adjustable hole cutter, make holes in drywall & ceiling tile, cutting diameters range from 2" to 7" with 1/4" increments, utilizes a quick lok arbor for tool free adjust ability, as well as laser etched markings & size indicator, users can quickly & easily identify & change sizes without the use of a hex key, durable & reusable debris shield with spring collar keeps cutting blades level & work areas clean, for applications in drywall & ceiling tiles including recessed lights, audio speakers, fire/security systems & clearance holes, includes clear plastic shield.