Size: FKG deep groove ball bearings have an inside diameter of 15 mm, an outside diameter of 35 mm and a width of 11 mm. | Rubber seal: These deep groove ball bearings have double-sided rubber seal to prevent the ingress of impurities and to save lubricant. | Performance: FKG ball bearing have the advantages of low noise, fast heat dissipation, low friction, high speed and high temperature resistance. | Good quality: These ball bearings are made of high quality bearing steel. Its steel construction makes it durable and resistant to deformation under heavy loads. | Application: Widely used in industrial machine, motorcycle, automobile, power tools and mechanical equipment and other kinds of field