"Earcup Set, Gray Leather, Flyer's Helmet. Used on HGU-55/P or HGU-33/P flight helmet. Slot on back to insert earphone element inside and velcros to inside helmet shell replacing the plastic earcup. Very comfortable upgrade to make on your helmet. New condition. Replacement for [PN 89C7735] NSN: 8475-01-392-6663"
