These adjustable furniture risers are made of sturdy solid carbon steel, ensuring that they can withstand even the heaviest furniture in your home or office. The screw clamp fixing keeps the risers securely in place, making them suitable for use with sofas, couches, tables, and desks. With adjustable widths of 1-3.7cm and height options of 5cm and 10cm, these risers are versatile and convenient. They provide additional height that serves a variety of purposes, such as extra storage space under beds and a more convenient height for elderly individuals. The risers also protect hard floors from scratches and scuffs. Overall, these furniture risers are a great investment for anyone looking to add height and support to their furniture. Features: 1. STURDY STEEL MATERIAL: Adjustable furniture risers made of heavy-duty strong Solid Carbon Steel, which can stand the weight of the heaviest of furniture in your home or office. They won't crack like other risers. 2. SCREW CLAMP FIXED & NOT FALL OFF: Use screw clip adjust fixing, wrapped furniture legs are not easy to fall. Suitable for sofa, couch, table, desk and easy to install. 3. ADJUSTABLE WIDTH: Adjustable widths are 1-3.7cm, can increase the height by 5cm and 10cm respectively. 4. INCREASED ADDITIONAL HEIGHT: Adds additional height not only storage space under beds but also added height allows vacuum cleaners or robot vacuums to work more flexibly. They also make it more convenient for the elderly to get in and out of bed. 5. PROTECT YOUR HARD FLOORS FROM SCRATCHES: Heavy duty and smooth edges would safely handle the weight without causing any dent or crack on hardwood or hard surfaces. Protect your hardwood, ceramic tile, and linoleum floors from marring and scuffs. Specification: Material: Plastic Product Color: Black, Brown Product Size: 5cm, 10cm Product Weight: 180g, 305g, 360g, 610g Package Included: 2 / 4 x Adjustable Furniture Risers