?Heavy-Duty Carbon Steel ? Fixirons 2025 Up-Grade Carbon Steel Bed Risers Made of premium powder-coated carbon steel for superior stability, which supports up to 10,000 lbs. Rust proof and durable than plastic Riser ?Application? Our 2.3" Carbon Steel Bed Risers are designed for dorms & home furniture, ideal for elevating square wooden bed frames in college dorms, tables, desks, or furniture legs. Creates under-bed storage space for bins, suitcases, and boxes ?Adjustable Height & Anti-Slip Protection:? These College Dorm Bed Risers can be adjusted between 3.2", 5.1", 8.1"or 11.2" height, and the plastic pads prevent floor scratches and reduce noise during movement ?Installation?1.Choose the height level you want. 2.Insert the metal plate and fix it with pin. 3. Put the bed riser or furniture leg into the bed riser. 4. Use with included adjustable screws ?Package Include & Guarantee?4 x Dorm Bed Risers with screw and manual (Check your bed/table leg diameter not over than 3.15" before purchase) If you have any questions please feel free to contact us and we will give you a satisfactory solution