Larger sizes permit reasonably heavier objects to be attached to drywall in locations where there is no stud behind the drywall.15/64" x 2-3/8" Removable-Screw Anchors (Molly Bolt) for Drywall, Plaster, and Wood Paneling, 20PK 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..