Excludes Lath & Plaster Walls: Note that our magnetic stud finder is not intended for use on lath and plaster walls Compatible with All Drywall Constructions: Whether you're in a newly constructed home or an older residence, the stud finder is your essential tool for detecting wood or metal studs concealed behind drywall The Simplest Stud Finder: Tailored for installers demanding swift, reliable results without risking wall damage. No false readings, no calibration needed Strong Magnets: Harnessing the strength of Magnetic , the stud finder precisely detects screw and nail heads within the wall. Once located, it securely adheres to the wall, precisely indicating the exact position of studs Ergonomic Excellence: Crafted with user comfort in mind, the magnetic stud finders for walls ensures an ergonomic grip for a seamless experience. Its plastic construction safeguards your walls, leaving no marks or scratches, Manufacturer: PokFhgur