Tired of struggling with getting your tubeless tyres seal up against the rim? The Topeak JoeBlow Booster pump just made it easier to install tubeless tyres. No more frustrating leaks because you can’t pump up your tyre fast enough to get an effective rim seal. This pump has an integrated aluminum air chamber that stores an air charge of one liter up to 160psi / 11bar to quickly fill your tyres and insure the proper installation on a tubeless rim. Once the tyre is mounted, you can turn the selector from CHARGE to INFLATE mode to pump air directly into your tyre and fine tune pressure as with a standard pump. The top-mounted easy to read gauge, air release button and comfortable Kraton grip, combined with its extra-long hose and stable base makes mounting any tyre a breeze!