Expiration date: Expired OLYMPUS BIOPSY VALVE (Box of 20 units) REF- MAJ-1555 (X) The MAJ-1555 is a single-use device with innovative leaktight construction and a secure mounting mechanism on the biopsy port. A smooth device insertion ensures a convenient procedure. Quantity: 20 Pieces per box Return Policy: Items are sold as-is with no returns or refunds available unless explicitly stated.