S6003-2RS (I.D.=17mm, O.D.=35mm, Thickness=10mm) s6003-2rs bearings are sealed on BOTH SIDES to keep lubricant in Stainless steel races for durability and corrosion resistance ABEC Tolerance 1 (P0), Z1 Noise Level for most general use Static load rating of 3250 newtons and dynamic load rating of 6000 newtons