Adjustable hole cutter. A one-size-fits-all solution for making holes in drywall and ceiling tile. Cuts hole diameters from 2 to 7 inch in 1/4 inch increments. Quik-Lok™ arbor for tool-free adjustability. Laser etched markings and side indicator. Make quick, easy, accurate size changes without using a hex key. Comes with a durable, reusable debris shield . Debris shield has a spring collar that keeps the cutting blades level and work area clean. Great for over-head applications. Black oxide coated.