1. Use screw clips to adjust and fix, so the wrapped furniture legs are not easy to fall. 2. The 3 cm groove sinks and does not tilt when moving. 3. The increased height not only makes available space under the bed, but also makes the vacuum cleaner or robot vacuum cleaner more flexible. 4. Avoid shoulder pain and neck pain caused by low furniture height. 5. They also easier for the elderly to get on and off the bed. 6. Made of hard plastic, it can bear the weight of the heaviest furniture in the home or office. They can safely support a total weight of 500kg pounds. 7. The high-density bottom felt pad can protect hardwood, ceramic tile, linoleum floor and carpet from scratches and scratches. 100% new and high quality Product name : Adjustable Chair Feet Adjusting width: 1/3.7cm Adjusting height:5/10cm Bearing capacity:500kg Colour:Brown Material:plastic Package Contents: 4 * Adjustable chair foot 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.