This model is made of PP+PVC material, with wear-resistant PU wheel surface, and the black and blue color scheme is fashionable and modern. The wheel surface diameter of 50mm and the socket diameter of 38mm are designed specifically for office chairs and are easy to install. PP+PVC gives the wheels good strength and toughness, making them sturdy and durable; the PU wheel surface ensures silent and smooth rolling, reduces noise interference, creates a quiet office environment, and effectively protects the floor. Whether it is daily office or meeting scenes, it can provide a smooth and comfortable mobile experience for office chairs, improve office efficiency, and is a high-quality choice for office chair accessories.