Fall protection connector. Before use, remove the protective cap, adjust the chain to the correct position, and then reinsert the protective cap. Spring-loaded mechanism. Our record clamps feature a spring-loaded mechanism that securely locks in place to prevent records from slipping. Adjustable opening size. The opening size is marked on the side of the product. The opening size can be freely and easily adjusted. Durable and stable. This record clamp is made of high-quality low-carbon steel with a plastic coating on the surface to ensure durability and stability. Lifting clamps: Vertical steel plate clamps are used for vertical lifting and transportation of steel plates and structures.