Adjustable drywall bit with adjustable multiple diameters from 45 - 130 mm, allows for cutting holes of different diameters with a single tool, saving money and space.

Fine & clean cuts: Three three-tooth blades easily cut through drywall and softwood, ensuring fine and clean cuts with their specialized tool, providing smooth cuts without burrs.

Easy to use: Loosen the 3 screws in the middle, adjust the diameter of the hole you want, and tighten those 3 screws to start drilling.

Multiple use: The drywall tool is widely used for woodwork openings, spotlight openings in drywall, openings in plastic panels, etc., but not for glass and metal.

Compatible tools: The hole saw is 0.39 inches accepted for all standard electric drills and battery screwdrivers. The battery screwdriver is suitable only for drilling in drywall, while the electric drill can be used on drywall, OSB panels, softwood, plywood, and more.