Pop toggles work with various diameter sheet metal screws. They are ideal for anchoring into hollow base materials such as drywall. They are ideal for hanging electrical fixtures, drapery supports, bathroom/kitchen accessories, pictures, mirrors, and more. Pop toggles also hold strong in solid materials such as wood studs, concrete or block. The anchor is corrosion resistant, and a pre-drilled hole is required. This pop toggle kit includes 3/8 in. and 5/8 in. anchors, #8 machine screws, a 5/16 in. drill bit, and a toggle key.Kit includes 3/8 in. and 5/8 in. pop togglesKit includes #8 x 1-1/4 in. and #8 x 1-1/2 in. screwsKit includes a toggle key which pops the toggle into place for a secure holdPre-drill with a standard 5/16 in. carbide tipped bit included in kitHolds strong even if solid material is hit