The world's greatest stud finder has a new update to make finding studs even easier - a transparent body. Now, in addition to being able to feel and hear the magnet move within the body, you're able to see the magnet move as well. With its transparent body, as well as a holographic sticker on the magnet, the DOT Plus makes it incredibly easy to be able to see the magnet move in response to any screws or nails in the wall.