The double-headed anchorless screws make them ideal for hanging frames on drywall, lath, plaster or in wood studs. The set includes six gold hanging screws that are 1" long, with a smaller neck that fits most keyhole hangers or cutouts. What's more, these hangers require no pilot hole, as their sharp self-drilling tip easily installs with a Phillips screwdriver. And because they are professional picture hangers used by museums and art galleries, you can trust their quality and durability. The four-in-one design of the screws allows them to be used with D-rings, sawtooth, wire and keyholes, making them compatible with a wide range of frames and artwork.Details: Gold 1" (2.5 cm) screw length Holds up to 30 lb. (13.6 kg) in drywall and 100 lb. (45 kg) in wall stud 12 packs (6 screws per pack, 72 total screws) Small neck fits most keyhole cutouts, D rings and sawtooth hangers Carbon steelInstructions: Install with a Phillips screwdriver. No pilot hole needed.