Features: 1. STURDY STEEL MATERIAL: Adjustable furniture risers made of heavy-duty solid carbon steel, capable of supporting the weight of heavy furniture in your home or office. Resistant to cracking compared to other risers. 2. SCREW CLAMP FIXATION: Secure screw clamp design wraps around furniture legs to help prevent slipping. Suitable for use with sofas, couches, tables, and desks. Easy to install. 3. ADJUSTABLE WIDTH: Adjustable width range from 1 to 3.7 cm, providing height increases of 5 cm and 10 cm respectively. 4. INCREASED HEIGHT: Provides additional clearance under furniture, creating more storage space and allowing easier access for vacuum cleaners or robotic vacuums. Offers improved accessibility for elderly users when used with beds. 5. FLOOR PROTECTION: Durable construction with smooth edges helps protect hardwood, ceramic tile, and linoleum floors from scratches, dents, and scuff marks. Specifications: Material: Plastic Color: Black, Brown Size: 5 cm, 10 cm Weight: 180 g, 305 g, 360 g, 610 g Package Included: 2 or 4 x Adjustable Furniture Risers