Larger sizes permit reasonably heavier objects to be attached to drywall in locations where there is no stud behind the drywall. 1/4" dia.Each of these wall anchors is zinc plated to resist rust and is durable enough to pierce and secure sheetrock, drywall and some types of paneling. x 1-3/4" L Snapper Pin / Lynch Pin (4 Pins), 4PK.