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. Contact us for prompt and satisfactory after-sales support.