[Customer-design]Furniture cups locks furniture in place while protecting hardwood, tile, laminate, linoleum, and any floors from damage from furniture. Square rubber furniture pads 't scratch or damage the floor, the friction is excellent to reduce noise, it's safety & useful for any floors or carpet [Irresistible Quality]Furniture coaster made of harmless, sturdy and soft rubber material to prevent dislocation, balance stress, no-slip furniture caster cups can support the weight of large, bulky furniture pieces from [Size]3.3x3.3 inch square. Each furniture stopper is size enough to hold legs of furniture. Perfect for any kinds of furniture legs. And suitable for any style of floors. Different from other shapes of floor protectors, it has unexpected functions and effects [Easy to Use]Just put wheels or furniture legs on the rubber furniture cups, at once protect floors and keep furniture still. fit to your bed, couch, chair, sofa, recliner, desk, table, dresser, piano, bed frame, armoire, fit most of wheels Colour:black Material:rubber Size:Inner Diameter: 8.4cm, Outer Diameter: 9.2cm Package Contents: 4 x Square Rubber Furniture Caster Cups Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.