Our set of two 5/8" 99502H sealed go-kart and drift trike bearings are commonly used in wheel hubs and various other components. These feature a 5/8" (16 mm) bore hole inner diameter and a 35 mm outer diameter. The width or "thickness" is 11 mm.
Please check your existing bearings for the series number, which is commonly found etched onto the side of the bearing.