Efficient Mattress Retainer Bar: Designed specifically for frames, this stopper provides a simple and effective solution to prevent mattress sliding, ensuring a secure and stable sleep surface. Package Includes Two Stoppers: With screws included, easily tighten these stoppers on the corners of the mattress using just a screwdriver. The package contains everything you need for hassle-free installation. Made of Durable Metal: Constructed with flat and thick metal, these stoppers are resistant to deformation and feature anti-oxidation treatment for long-lasting durability. Rest assured that your mattress will stay in place for years to come. Versatile Usage: Suitable for frames in your home, vacation home, or RV, these stoppers offer versatile usage options. Before purchasing, please ensure compatibility with screw installation and double-check the size requirements. Satisfactory After-sales Service: We pride ourselves on providing excellent customer service. If you encounter any issues or have any questions, our dedicated team is always available to assist you. for prompt and satisfactory after-sales support.