The Prestaflator is designed with a long-throw trigger valve. Use a light squeeze or brief, rapid shots to gently inflate Bike tires to your desired pressure over a few seconds. A full squeeze on the trigger provides maximum pressure for seating tubeless tires. The dial pressure gauge lets you follow your progress visually. Designed for MTB & Road tires with a wide range of pressure requirements. The Prestaflator uses our new angled push/pull head with Urethane Elastomer Grommet. Its the fastest and easiest Presta valve connection. Its softer and stronger than our previous version. It lasts more than 5 times longer, gives a better seal and flexes to work anywhere along the Presta shaft for better tubeless tire application. The Prestaflator Head includes a removable cap with our new Quick-Click2 push/pull head. Quick-Click2 is the fastest and easiest Presta valve connection. Our original Quick-Click and our new Quick-Click2 heads should be used with all Tubeless applications and any tubes with removable valve cores.