Description: Furniture Stopper: our furniture cups adopt a square groove design, which fits the wheels more closely, prevents the wheels from sliding, and ensures stability suitable to be used with most furniture wheel types. Protect Your Floors: the caster cups are made of plastic material, durable, anti scratch, anti noise and wear resistant Perfect solution to protect your floors from damaging due to everyday use and movement of furniture. Unique Non slip Design: Electrostatic adsorption technology is used at the bottom of the furniture stopper, so that the furniture stopper is well anti slided on a wooden floor or a smooth surface. Wide Application: these furniture coasters can be widely used in home and office chairs, shelves, piano, sofa, bed frame,recliner, etc. One Second Installation: easy to install with no extra tools, just put the furniture wheels on the caster cups After use, no longer worry about the wheels running around. Size Chart: 74x59x17mm or 2.91x2.32x0.67inch Package Includes: Optional Package: 4 Pieces or 8 Pieces Furniture Caster Cups Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.