Hillman 1/8 In. Short Drive Hollow Wall Anchor (100 Ct.)Primarily used in drywall, the Drive Wall Anchor is a medium duty fastener for use in drywall, plaster and tile. The tip has a drive point to pierce drywall easily; no pre drilling is required. The two prongs on the head of the shell, prevent the anchor from rotating during expansion. When the anchor is fully expanded, spider like legs draw tightly against the backside of the wall. Once the body of the anchor is installed, the screw can be changed