EASY TO USE: The StudBuddy is the world's simplest magnetic stud finder tool. The StudBuddy works with all drywall construction by using powerful magnets to locate the screws in the studs. MADE IN THE USA: The StudBuddy magnet stud finder tool is proudly made right here in the USA from high quality, durable materials. NOT INTENDED FOR USE ON LATH & PLASTER WALLS: The StudBuddy is best used as a wall stud finder for drywall and wood. HOW IT WORKS: Drywall is hung to wood or metal studs using screws or nails. The StudBuddy utilizes super-strong neodymium magnets to detect those screw/nail heads as you run the studfinder across your wall. When a screw or nail head is detected, The StudBuddy stud finder level "sticks" to the wall, pointing you to the exact location of these studs. NO BATTERIES NEEDED: With the StudBuddy stud finder magnet there are no batteries or moving parts to worry about. The StudBuddy is always ready to work with no need for calibration as with other stud finders & scanners! › See more product details