The Double Expansion Shield Anchor is designed for secure anchoring in concrete, brick, or block base materials. When a machine-threaded bolt is inserted and tightened, the anchor expands at two points along its length, providing a strong grip and reducing the risk of base material damage. Manufactured from high-quality Zamac zinc alloy for superior corrosion resistance, this anchor is ideal for light to medium-duty fastening applications. The dual expansion design ensures excellent holding values in softer or variable-density base materials.