Why Choose Our Adjustable Sofa Raisers/Table Raisers/Bed Raisers/Furniture Risers? Protects Floors from Scratches: The upholstery High-density felt furniture protectors safeguard your wood, ceramic, and linoleum floors from scratches and scuffs. Strong Load Capacity: They are made of durable hard plastic that can withstand the weight of the heaviest furniture in your home or office. Reusable: Fits most furniture legs, no worries about deformation, mold, or rust like wood or steel furniture lifts! [Adjustable Clamping System]: Pack of 4 4-inch furniture risers and table risers, increasing the height by 100mm. The table leg extension is suitable for desk legs with a thickness of 0 to 1.5 inches (0-38mm). You can adjust the spacing as you wish on your furniture frame and tighten with an included screwdriver. [Not Easy to Fall Off]: Our chair and table leg risers with an adjustable rail screw terminal securely hold the frame with the clamp fitting and won't fall off when lifting and moving furniture. Unlike other furniture risers with grooves without a clamping device, every slight movement can make the risers unstable and fall off the furniture legs. [Increase Height by 4 Inches]: 4-pack black or brown furniture legs, space-saving risers for bed, table, and sofa, heavy-duty furniture risers for bathroom cabinets, desks. Creates an extra 4 inches of space under the bed. Elevate your bed, making it easier to clean under furniture, especially great for robot vacuums. [Heavy Duty Bed Risers]: Made from heavy-duty materials, these furniture risers are super solid and durable. 4 combined can easily lift up to 4400 pounds (2000 kg). Not only great for lifting beds and mattresses, but also ideal for lifting nightstands, sofas, tables, desks, cabinets, and shelves at home and in the office, they make your legroom more comfortable.