I bought from this pump two pieces, since you know the poor quality of such pumps. But had quite good experiences with other "Unitec" products. Therefore, the courage to try it yet. The quality of the two pumps was indescribably bad !! I did it with the two pumps together not even managed 4 Kettcar tires inflate (car valves). After the third inflated with difficulty wheel both were broken. One star is far too much for this truly exceptional bad quality. Pumps bent under my footsteps almost like plasticine. Neither the metal nor the joints had even the slightest stability. Almost shocking that such a thing put on the market. Pure waste of resources. Terrible. I strongly advise against purchasing. Positive was that the trader quickly and efficiently rewarded me by sending a video of the purchase price.