DescriptionThe StudPoP® is not like the other magnetic stud finders on the market which are nothing more than a magnet inside a piece of plastic. It is the world’s first moving magnet stud finder and is guaranteed to find studs in any house, in any wall or ceiling. Unlike all other magnetic stud finders, StudPoP doesn’t depend on you to “feel” the magnet tugging on a nail or screw. The StudPoP’s “popper” takes care of that for you. Once a metal fastener is detected, StudPop's popper points straight out.