The WallGripper® is the only expandable screw-in anchor on the market. It expands and grips behind the drywall, and it is twice as strong as a regular screw-in anchor. Its patented design offers the ultimate holding power without any pre-drilling. Its unique body design consists of four expandable wings that collapse and grip tightly behind the drywall. A fine centered point helps guide the anchor into the wall with flawless precision.