The pump is great for making a correct inflation of bicycle tires. The pressure obtained is honorable, we have a good support. However, in order to inflate, you must properly install the cap on the valve. And this operation should be greatly improved. In fact: - The trigger for maintaining the tip of the valve is hard to push, and as hard to remove - Once one wants to remove the nozzle after removing the trigger, we must act quickly to remove the cap, otherwise the air leaks from the tire. And remove the tip of the valve is complicated, the tip tends to remain on the valve. Air leaking so much more. Also, check the status of your tube: If you use excessive valve, you may end up like me to crack and thus to change the tube. Do not hesitate to inflate a bit to be able to give a margin to remove the tip.
