This simple, battery-free stud finder from Stanley uses a powerful magnet to locate metal fasteners hidden behind drywall. By detecting the steel nails and screws used to secure drywall to wall studs, it reliably identifies stud locations without batteries or calibration.

• 3/4" magnet detects metal through drywall
• Grooved base for precise marking once stud is found
• Compact size: 1-3/8" x 1-3/8" x 1-1/4"
• No batteries required
• Limited lifetime warranty

Tip: Move the finder slowly across the wall surface. When the magnet pulls toward a fastener, you have located a stud. Use the notched base to mark the spot with a pencil.