Simpson Strong-Tie's 1/4 in. x 1 in. Drop-In Internally-Threaded Zinc-Plated Anchor is well suited for attaching fixtures, supports, equipment, and other components to concrete where a reliable mechanical anchor is required. The internally threaded design allows the installed anchor to receive a threaded rod, bolt, or other compatible fastener, while the drop-in configuration keeps the finished connection compact. Proper hole diameter, embedment, and setting-tool use are important for achieving the intended performance of the anchor. Supplied in a 100-pack, this Simpson Strong-Tie anchor provides a convenient quantity for construction, maintenance, and installation projects requiring repeatable concrete fastening.