This caster is made of PP+PVC, combining durability with stylish design. The classic black and white color scheme is simple and elegant, and can be easily adapted to various office environments. The design of 50mm diameter and 38mm socket diameter is specially designed for office chairs and is easy to install. The PU wheel surface is wear-resistant and silent, reducing the noise generated by rolling friction, creating a quiet office atmosphere, and effectively protecting the floor from scratches. Whether it is frequent movement in daily office or position adjustment in meeting scenes, it can be handled smoothly, providing a comfortable and efficient mobile experience for office chairs. It is a high-quality accessory choice to improve office comfort and efficiency.