This popular white and black PU wheel has a wheel diameter of 50mm and a socket diameter of 38mm. It is made of PP+PVC material and is a universal accessory for office chairs. The white and black color scheme is simple and elegant, and can be easily integrated into various office environments. The PP+PVC material gives the wheel good strength and toughness, making it durable and not easy to damage; the PU wheel surface is wear-resistant and quiet, reducing the noise generated by rolling friction, creating a quiet office atmosphere, and effectively protecting the floor. Its specifications are designed to fit most office chairs, and it is easy to install, providing a smooth and comfortable mobile experience for office chairs and improving office efficiency.