5/16 x 1 3/4 Lag Shield Zinc Plated (Long)

5/16 x 1 3/4 Lag Shield Zinc Plated (Long) . This lag screw expansion shield is a die cast zinc alloy expansion shield for anchoring lag screws in a variety of base materials including concrete, concrete block, brick and mortar joints. Radial ribs provide additional holding power in softer material.