Features: Noise reduction: It doesn't make a jarring sound, allowing chairs to glide smoothly and quietly along the floor. Ideal applications: Suitable for floors of different materials, and can also be given as gifts to friends. Specifications: Material: plastic Color: grey Size: 7/8 Inch Package includes: 144 x Chair leg caps Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays