Zircon MetalliScanner m40- FFP Handheld Electronic Metal Detector Use on Dry Wall, Concrete, Lathe and Plaster, Stucco and More, Battery Included Zircon's MetalliScanner m40 metal detector locates ferrous (magnetic) metal and non-ferrous (non-magnetic) metal Quickly and easily detects metal in wood, drywall, paneling, tile, stucco, plaster, concrete and other non-metallic surfaces Works as a great stud finder for plaster walls, as well as finding rebar in concrete Easily finds plumbing, ductwork, rebar, nails and screws in your walls, floors and ceilings Now in easy open packaging, 9 volt battery included Locates ferrous (magnetic) metal behind walls up to 4-Inch (102 mm) deep and non-ferrous (non-magnetic) metal up to 2-Inch (51 mm) deep Quickly and easily detects metal in wood, drywall, paneling, tile, stucco, plaster, concrete and other non-metallic surfaces Works great for finding studs in lathe and plaster walls, as well as finding rebar in concrete Easily finds plumbing, ductwork, rebar, nails and screws in your walls, floors and ceilings Now in easy open packaging, battery included