Material: Zamac Alloy Description: The Single Expansion Shield is a corrosion-resistant expansion anchor designed for use in concrete and brick walls, offering excellent tensile strength. It is also known by the name Single Expansion Anchor. This single anchor's internal threads allow screws to be directly fastened, and once installed, it sits flush with the surface, providing a secure and aesthetically pleasing anchoring method. Features: The single expansion anchor is mainly suitable for wall surfaces such as concrete and solid brick, which provide sufficient support for the anchor to expand properly and hold firmly during installation. Made of zinc alloy for excellent rust resistance Internal threaded design allows screws to be directly fastened Once installed, it sits flush with the wall for a neat appearance