Received quickly, I tried it immediately and after a failure, I tried again with the smallest model and, impeccable, I was afraid it would be too small, but no, it worked. I keep my wheel under observation to make sure it doesn't deflate. The user manual is not complete, and I understand that it doesn't work for some who follow the instructions to the letter. For my part, I am very satisfied because the device is already paid for considering the price that the repair would have cost me in a garage.