This is a contract for the manufacture of a "BALL, VALVE, PORTED" to specific military standards, including MIL-STD-130 for marking. The contractor is responsible for inspection and quality assurance, with records to be maintained for 365 days after final delivery. The performance location is not specified, but any change to the production facility requires written approval from the Contracting Officer and must include a $250 price reduction to cover administrative costs. Only authorized distributors of the original manufacturer's item will be considered for award, and they must provide proof of authorization with their offer.