This wheel is made of high-quality polyurethane (PU) with a 360° rotation function. The PU casters can protect your hardwood floors and carpets without leaving any marks or scratches. It is specially designed for office chairs. The wheel diameter is 50mm, the socket mouth is 38mm, and it is made of PP+PVC material. It is both lightweight and wear-resistant, ensuring that it is not easily damaged after long-term use and providing stable support for office chairs. The black and green color scheme is stylish and elegant. It rolls smoothly and quietly, effectively reducing moving noise and improving the office experience. In addition, we can provide customized styles and materials according to customer needs to meet diverse office scenarios. It is an ideal choice for those who pursue quality and personalized office solutions.