Roller bearing: 1)ID:17mm-360mm. 2) High precision,long life. 3) 20 years supply bearing. 4) ISO9001:2000Certificate....... Roller bearing : 1) Good quality, competitive prices2) Wide application and attractive appearance3) Widely used in automobile ,rolling mill , mine , metallurgy, plastics machinery, machine tools ,heavy-duty equipment , construction machinery, oil drilling sailing and ...