L.H. Dottie TG8KTP #8 Grey Triple-Grip Anchor Kit with Pan Head Combo Drive Screws Tuff Pack. The Multi-Grip Anchor is designed with two expandable wings that grip behind the drywall for maximum holding power. It features advanced cam action technology that expands to create additional pressure against the substrate, helping to provide more stability. These anchors are not recommended for use overhead or where holding values are critical. Suitable materials for use include drywall, block, brick, and masonry.