More informationCHARACTERISTICS:. Allows easy transfer of sealant from one tire to another. Includes Schrader valve core remover. Double threaded plastic adapter fits Presta and Schrader valves. Now with rubber gasket for smoother operation DESCRIPTION: Two-ounce graduated nozzle makes applying sealant easy, without making a mess or wasting sealant. The double threaded tip fits both Presta (internal threads) and Schrader (external threads) valves.