Features: Precut tennis design: These floor protectors are pre cut, making the precut tennis balls bulk easy to put onto a chair, ready to install, just slide the ball on, no risk of scratching your hands. No tools required, even the elderly and children can operate easily. Protect the floor and glide quietly: These tennis balls for chair leg can wrap the furniture legs well, protect the furniture legs from being soiled, and will not scratch your hardwood floor when you drag tables, chairs and other furniture. In addition, it can also play a good mute function, and will not disturb the neighbors downstairs. Specifications: Material: rubber, felt Color: grey Size of diameter: approx. 63 mm/ 2.5 inches Package includes: 220 x Precut tennis balls Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.