【Adjustable Clamp System】Set of 4 4 inch furniture riser and table riser, increase the height by 100mm. The table leg extension is suitable for desk legs with a thickness of 0-1.5 inches (0-38 mm). You can adjust the distance as you like on your furniture frame and tighten with a screwdriver provided. 【Not Easy to Fall off】Our Riser chair legs and table with rail adjustable screw terminal hold the frame firmly using the clamp bracket and won't fall off from lifting and moving furniture. Unlike other taller furniture with grooves without a clamping device, every slight movement can cause the risers to become unstable and fall off the furniture legs. black or brown furniture, Space saving risers for bed, table and sofa, heavy furniture risers for bathroom cabinets, desk. Creates an additional 4 inches of storage space under the bed. Raise your bed, making it easier to clean under furniture, especially good for robotic vacuum cleaners. 【Heavy Duty Bed Risers】Made from sturdy materials,