Furniture risers are made from ABS and each bed riser can handle heavy furniture up to 1300 pounds without wobbling. The top triangular cone anti-slip design prevents furniture from sliding left and right. (Diameter: 3.7 inches, Height: 2.3 inches). The bottom of the riser is designed with anti-slip rubber pads, which can protect furniture and floors from scratches and reduce vibration. Also protects them from moisture. Riser boards are suitable for raised beds, sofas, , cupboards, tables, chairs and refrigerators. These bed risers help improve sleep and provide support for people with back pain. Risers are great for raising the height of low furniture and facilitating the transition from sitting to standing. This quick, easy solution can help people with limited mobility get up from the couch. Material: ABS colour: black Package Contents: 12 x Booster pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.