ENOUGH SIZE - 4 Inch brown round rubber caster cups, each round rubber caster cup is big enough to hold the legs of most furniture and the dark chocolate brown color will blend seamlessly with wood and complement various metal finishes. PREMIUM FURNITURE COASTERS - Made from premium dense rubber, No more sliding around. These grippers actually grip the floor and the couch stays firm in place. will not scratch the floor. PREMIUM FLOOR PROTECTORS - Black round rubber casters can withstand heavy furniture (such as sofas, beds, pianos, cabinets, chairs, tables) to the point of protecting the floor from scratches and damage. EASY INSTALLATION - You only need to slide the caster cup under the furniture foot, and then let the caster perform its design work. NO RISK PURCHASE - In case any broken problem happens, contact us without hesitation to solve the problem until satisfaction. You have no risk to try. VOCOMO 4X4 Caster Cups, Round Rubber Furniture Cups