6003ZZ (I.D.=17mm, O.D.=35mm, Thickness=10mm); 6003ZZ bearing are shielded on BOTH SIDES to keep lubricant in; Chromium Steel long-life bearings, smooth and low noise.
6003-2RS (I.D.=17mm, O.D.=35mm, Thickness=10mm); 6003-2RS bearing are shielded on BOTH SIDES to keep lubricant in; Chromium Steel long-life bearings, smooth and low noise.