The 714 Hammer Drive Anchor Kit is intended to be used in concrete or brick for permanent installation. It is used for signs and brackets or where tamper resistance is required. The anchor is inserted into the hole on the mounted item and then inserted into the hole in the wall. The nail is tapped in and the anchor expands radially in the hole. Although the anchor is suitable for solid and hollow walls, it is best used in brick, block, and concrete walls.