This procurement is for 21 aircraft ring spacers to be delivered within 55 days after receipt of order. The resulting contract is a one-year Indefinite Delivery Contract with an aggregate ceiling of $350,000, an estimated 5 orders per year, and a guaranteed minimum of 3 items. Delivery will be to various CONUS and OCONUS DLA Depots. Approved sources are listed, and specifications are not available. Quotes must be submitted electronically by responsible sources.