Check the listing for details. EZ Stud Finder with 10 Additional Magnetic Markers. Color: Banana Yellow, Condition: New. Listed at 13.99 USD. EZ Stud Finder, Magnetic Stud Finder, Stud Finder. Condition is New. Shipped with USPS First Class Package.4 tools in 1: 1. Magnetic Stud Finder - Assembled in USA, 12 magnets 1" apart, cover more area that most magnetic Stud Finders. 2. Level to insure items mount on wall are leveled. 3. 12 inch/ 30 cm ruler to measure distance of items mount on wall. 4. Magnetic Marker, so you do not have to mark up wall. Markers will stick to wall where screw or nail is found.The EZ Stud Finder will NOT STICK TO THE WALL WHEN A SCREW OR NAIL IS FOUND (A MAGNET WILL MOVE) TO INDICATE A SCREW OR NAIL IS FOUND. The magnetic marker will sticks to the wall where a screw or nail is located. MAY NOT WORK ON PLASTER WALLS". When scanning for a stud, move the EZ Stud Finder slowly and insure EZ Stud Finder lays flat against the wall. No Calibration nor adjustment required.No Batteries needed.Very easy (EZ) to use. My grand-daughter was able to find and mark a stud using the EZ Stud Finder.Cover a wider area (11.5 inches) then most magnetic Stud Finder.12 Magnetic marker included, so that you do not have to mark up walls.3 EZ step to find a stud: Step 1. Place EZ Stud Finder vertically and flat against the wall, using the level as a handle. Step 2. Slowly move EZ Stud Finder across the wall. When you see one or two magnet(s) move, you have found a stud. Step 3. Take one of the two magnetic markers and place it at the position where the magnet moved. The magnetic marker will stick to the wall.