Teravail Presta Valve Core - Bag of Ten Bag Full of Tricks A worn or leaking valve core can ruin an otherwise perfect tube, and the Teravail Presta Valve Core keeps a fix within easy reach. These replacement presta valve cores fit all presta valve Q-Tubes, giving you a quick and affordable way to restore proper seal and airflow without replacing the entire tube. Features Replacement presta valve cores for restoring proper seal and airflow to a worn valve Fits all presta valve Q-Tubes and Teravail tubes for broad compatibility Sold as a bag of ten for a stocked home or shop repair kit SPECIFICATIONSValve Type Presta Compatibility All presta valve Q-Tubes and Teravail tubes Quantity10 valve cores | Teravail | Presta Valve Core - Bag Of Ten Bag Of Ten