This is a sole-source opportunity for the procurement of 55 units of a specific flexible hose (NSN 6X-4720-LWM044263) from Cometto SPA. The part requires engineering source approval, and the approved source retains essential data and manufacturing knowledge not economically available to the government. Delivery is FOB origin, and the quantity required is 55 each. No budget amount or performance location is specified in the description. The opportunity is for spare part replenishment, with no submission timelines provided.