bearings
These bearings are made of high-quality bearing steel long life with low noise.
6812RS/2RS: (ID)60mm (OD)78mm (T)10mm
6813ZZ/Z: (ID)65mm (OD)85mm (T)10mm
6813RS/2RS: (ID)65mm (OD)85mm (T)10mm
6814ZZ/Z: (ID)70mm (OD)90mm (T)10mm
6814RS/2RS: (ID)70mm (OD)90mm (T)10mm