Established in 2007, Zhangzhou Runstar Bearings Manufacturing Co.,Ltd is a professional manufacturer of Unresponsive Yoyo Bearing for yoyo in Zhangzhou,China. Equipped with advanced production line and inspection instruments, Runstar have our own factory of nearly 5000 square meters and we have our own professional R&D teams to supply and solve the solutions for yoyo. we have more than 15 years’ experience in designing and manufacturing high precisionand high speed Magic Yoyo Bearings with many shapes, there are U-groove YoYo Ball Bearing, V-groove YoYo Ball Bearing and T-groove YoYo Ball Bearing in Runstar, as well as U-groove YoYo Ball Bearings with 8 cuts at request. In order to reduce friction, prolong idling time and make players have a better experience, Runstar has specially designed and modified the YoYo Bearings the original seven balls into ten balls, if you hold the inner ring with one hand and turn the bearing with the other hand, the yoyo bearings can rotate for 20 seconds at least, there are chrome steel(Gcr15) and stainless steel (440 or 420) for choice. We export Yoyo Bearing Types wordly,and they are well-known for high precision,high speed,low voice and long life. I sincerely hope to establish a good business relattion with you, if you are interested in our products,please feel free to let me know,high attention and fast reply will be given for you.Thanks in advanced.