Important Tips: Please measure the size of your chair legs before purchasing. Square leg face side length: 24-40mm (0.94-1.57in), Round leg diameter: 35-45mm (1.45-1.77in), Circumference: 3.54in-6.3in inches (90mm-160mm). Felt Mat: Designed with high quality round felt base, which can effectively protect your beautiful wood/tile floor, carpet and furniture legs from being scratched. Reduce noise when moving the chair and let the chair slide smoothly. They also have an excellent anti-slip effect. It's simple: each chair pad adapts to the ends of your equipment. In addition, the chair stopper is very easy to attach as no nailing/screwing or gluing is required. Thanks to the solid fastening, once installed, you can move your various pieces of furniture around your house/apartment without making a sound and without scratching or damaging your floor. Versatile: The felt base can be attached to all your furniture: chairs, stools, tables, folding chairs, consoles, TV cabinets, sofas, etc.