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 foot with perimeter of 5.07" to 6.56(128.8-166.5mm). Material:Our silicone chair leg Protectors usen't gel and nails and we use special technology to combine the felt and the silicone into one inseparable piece.Package included 16 pieces. Install:The felt furniture pads is easy to put on,no tools needed, no chair foot cleaning needed,nd not easy to fall off. Use: chair leg protectors for hardwood floors cushion cover protect shardwood floorsand tiles from scratches, reduces noise and prevent bumps. Felt pads on the bottom reduce resistance, allowing furniture to move easily and quietly without lifting. shape: It 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 use our chair legs cover at your new place; If it is dirty, it can be washed directly with water.