Part Number: 1261-000-K000-3 (Polarizing ring)Part Number: 1261-000-K00M-1 (Polarizing ring)Part Number: 1261-000-K00M-2 (Polarizing ring)Part Number: 1261-000-K00M-5 (Polarizing ring)Part Number: 150293-0000 (Polarizing ring)Part Number: 18429 (Polarizing ring)Part Number: 19920 (Polarizing ring)Part Number: KA-89-114-MAA (Polarizing ring)