Never be caught off guard by a flat tire with this dual cylinder lightweight aluminum alloy bicycle pump. Vintage style with modern functionality, the pump is scratch resistant and fits conveniently in your pocket. Slim enough to carry while you bike - pack it up and never worry about getting stranded with a flat tire again! At .75" diameter by 4.75" long, this pump has a max pressure of 90 psi. Don't leave home without it!