Prestacycle Prestaflator Pro Presta/Schrader Bicycle Inflation Tool. 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.