Supported O.E.M.'s › ICS-40-790-001 LOWER FOCUS RING, CERAMIC, MUST HAVE SERIAL #, RA INSPECTION & 510588 ADDED TO ENGRAVING Image 1 of 1 ICS-40-790-001 LOWER FOCUS RING, CERAMIC, MUST HAVE SERIAL #, RA INSPECTION & 510588 ADDED TO ENGRAVING $0.00 LOWER FOCUS RING, CERAMIC, MUST HAVE SERIAL #, RA INSPECTION & 510588 ADDED TO ENGRAVING Add To Cart Added! LOWER FOCUS RING, CERAMIC, MUST HAVE SERIAL #, RA INSPECTION & 510588 ADDED TO ENGRAVING You Might Also Like ICS-40-279-001 SHIELD DIAPHRAGM ICS-40-249-003 DISC., CERAMIC LOWER ELECTRODE 6" ICS-33-338-001 OUTER BELLOWS ICS-33-337-001 BELLOWS, INNER ICS-40-261-002 INSULATOR PAD