Supply non-standard ball bearings, we have the tachnology to develop the bearings used foe special ways. Deep groove ball bearings are particularly versatile. They ... / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ Ball bearings snap ring: N, NR Tolerance codes: ABEC-1, ABEC-3 ... -2RS25.452216205/21-1-2RS305512/11.683655N3062106820635722535DSF0141.2722383B231-2RSZ Non-standard Ball Bearings