Quality materials: Made from high quality rubber material. Easy to push and pull, wear-resistant, low noise, effectively protect the wooden floor from scratches. 360 degree swivel casters: The caster design ensures high stability, flexible rotation, safe and reliable, convenient operation. Suitable for any type of floor. Brake design: Equipped with a braking device to prevent slipping. Easy to use, press to brake. Easy to Install: Each castor comes with a plastic cap, so all you have to do is insert the wheel into the hole and tighten. Please make sure your size is suitable for you before purchasing. Multipurpose: Suitable for small sofas, cradle, cot, trolley, chair, stool, study table, plant stand and shoe rack, toy rack and other small furniture.