Features: Precut tennis design: These floor protectors are precut, making the precut tennis balls bulk easy to put onto a chair, easy to install, just slide the ball on, no risk of scratching your hands. No tools are 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 an ideal mute function, and will not disturb the neighbors downstairs. Specifications: Material: rubber and felt Color: gray Size of diameter: approx. 2.5 inches/ 63 mm Package includes: 400 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.