It’ll be easy to identify all the studs in your workspace with the Ryobi Whole Stud Detector. Using Multi LEDs and Auto Depth Scan technology, the Ryobi Whole Stud Detector finds whole studs behind drywall so there’ll be less holes and cursing. The center indicator LED ring even lights up when the stud center is found and you can use it to find metal, wood, and AC wire behind your wall.