6308ZZ (I.D.=40mm, O.D.=90mm, Thickness=23mm); 6308ZZ bearing are shielded on BOTH SIDES to keep lubricant in; Chromium Steel long-life bearings, smooth and low noise.
6308-2RS (I.D.=40mm, O.D.=90mm, Thickness=23mm); 6308-2RS bearing are shielded on BOTH SIDES to keep lubricant in; Chromium Steel long-life bearings, smooth and low noise.