The Stan's Incredible Handlebar Mount conveniently stores the DART tool for easy access whether in a pocket or backpack. With a quick spring-loaded arm it deploys the DART head to create a permanent mechanical and chemical seal for large holes or tears in bicycle tires.Dart tool sold separatelyConveniently stores the Dart tool on the handlebar or in a pocket/backpack for easy accessFeatures a spring-loaded arm that quickly deploys the Dart head for efficient tire repairsShips in eco-friendly compostable packaging and includes three refillable Dart heads