This is a procurement for 122 pressure bellows, with an option for an additional 50%, requiring delivery within 600 days. The final award will be based on a combination of price, delivery, and past performance. Approved sources for the parts are listed, including Senior Operations LLC, Kinemotive Corporation, Honeywell International, and Service & Sales Inc. The item is manufactured for military use only and is not a commercial item. Interested suppliers may identify their capability to provide a commercial alternative within 15 days of this notice.