Toggler Alligator anchors are built for confident, high-load fastening in solid walls, ceilings, and floors - especially in dense substrates like concrete, brick, and stone - but they're also engineered to stay secure when the jobsite surprises you with an unexpected cavity. That means dependable performance in hollow brick, hollow block, drywall, and tricky assemblies like tile over drywall, where typical anchors can spin or lose bite. The specially formulated polypropylene body is designed to "flow" into the drilled hole and lock into small irregularities and undercuts, helping bond the screw-and-anchor system to the wall while also sealing the hole to reduce moisture intrusion. For the strongest holding values in highly dense materials, match the screw diameter and the drill diameter to the anchor diameter - this promotes optimal expansion and full contact with the substrate. Alligator anchors are offered in two styles to fit different installation needs - an un flanged option for push-through mounting, and a flanged option for added stability when a cavity is anticipated (such as drywall, hollow brick, or block). Either way, you get a versatile anchoring solution that's designed to deliver reliable grip across both solid and hollow conditions.