1. Adjustable Hole Saw: This woodworking drill features multiple adjustable diameters from 45mm to 130mm (1.77 to 5.12 inches), allowing you to cut holes of various sizes with a single tool, saving time and space. 2. Clean and Fine Cuts: Equipped with three triple-tooth blades, this tool easily cuts through plasterboard and softwood panels, delivering clean, smooth, and burr-free results thanks to its precision design and straight adjustment capability. 3. Easy to Use: Loosen the three center screws, adjust to the desired hole diameter, then tighten the screws securely to begin drilling. 4. Multiple Uses: Ideal for creating openings in wood, drywall, plastic panels, and similar materials. Not intended for use on glass or metal. 5. Compatible Tools: Features a 0.39-inch shank that fits all standard electric drills and cordless screwdrivers. Note: Cordless screwdrivers are suitable only for plasterboard, while electric drills can be used on plasterboard, OSB, softwood, plywood, and other similar materials.