Material: Our silicone chair leg protectors do not use gel or nails. We use special technology to combine the felt and silicone into one inseparable piece. Package included: 16 pieces Common size: Circular diameter 1.61" to 2.09" (41-53mm). Square side length 1.27" to 1.64" (32.2-41.6mm). Suitable for chair feet with perimeter of 5.07" to 6.56" (128.8-166.5mm). Installation: The felt furniture pads are easy to put on, no tools needed, no chair foot cleaning required, and they are not easy to fall off. Use: Chair leg protectors for hardwood floors, cushion cover to protect hardwood floors and tiles from scratches, reduce noise, and prevent bumps. Felt pads on the bottom reduce resistance, allowing furniture to move easily and quietly without lifting. Shape: Can be applied to various shapes of round and square chair feet, such as restaurant chairs, terrace chairs, kitchen chairs, metal bistro chairs, etc. After disassembling the product, you can continue to use our chair leg covers in a new location. If dirty, they can be washed directly with water.