①. STURDY STEEL MATERIAL: Adjustable furniture risers made of strong, durable carbon steel that can withstand the weight of furniture in your home or office. They will not break like other risers. ②. FIXED AND NON-FALLING WITH SCREW CLIP: Adjust the fastening with screws, the wrapped furniture legs will not fall off easily. Suitable for sofas, couches, tables, desks and easy to install. ③. ADJUSTABLE WIDTH: The adjustable width is 1-3.7 cm, can increase the height by 5 cm and 10 cm respectively. ④. INCREASED EXTRA HEIGHT: The extra height not only provides space for storing things under beds, but also allows vacuum cleaners or robot vacuum cleaners to work more flexibly. They also allow the elderly to get in and out of bed more conveniently. ⑤. PROTECT HARD FLOORS FROM SCRATCHES: Sturdy and smooth edges will safely support weight without causing dents or cracks on hard or solid surfaces. Protect your wood, ceramic tile and linoleum floors from scratches and scuffs. Specification: Material: Plastic Product Color: Black, Brown Product Size: 5cm, 10cm Product Weight: 180g, 305g, 360g, 610g Package Includes: 2 / 4 x Adjustable Furniture Risers