My wife and I recently purchased two bikes that have been sitting awhile and the tires needed some air. We thought this would be a great economical pump but while pumping up the second tire the hose sprun a leak at just 35PSI! We didn't even get a full bike operational by the time this thing gave way. Luckily, Amazon refunded our money promptly. We have since shelled out a little more coin and purchased a quality unit. Spend the extra money and only buy on pump. You never know when you will need it and the cheap one fails you.