Screw type expansion anchor cast from rust proof zamac alloy. The lag shield is ideally suited for base materials of questionable integrity. The lag shield consists of die cast sleeves with formed internal threads and designed for use with lag bolts. Lag shields offer significant expansion, and well suited for fastening applications in old masonry structures.Typical Applications:Ornamental iron railsLight duty shelvingResidential sill and deck platesPrecast step mountsPark benches