Workhorse Automotive high quality heavy duty TR573 commercial truck replacement brass valve stems. Conforms to SAE JI205-JI206, performance criteria for aging, heat and ozone resistance. Each valve stem comes with a high quality metal cap with O-ring for an extra secure fit. Valve stem is fully brass and comes with a high temperature rated nickel plated brass core, ozone resistant EPDM rubber grommet, washer and nut. Pack of 10.