E-Z Ancor Stud Solver #7 x 1-1/4 in. Zinc-Plated Flat-Head Phillips Drywall Anchors (50-Pack) work every time. The anchors install anywhere on a wall, even if you hit a wood stud behind the drywall. Stud Solver anchors are great for hanging bathroom/kitchen accessories, shelving, light fixtures, mirrors, picture frames and more.