There is so much air from such a small pump the topeak peak dx ii is an ultra compact yet highly efficient mini pump for road bikes the topeak peak dx ii mini pump has a high quality all aluminium construction a great mini pump for road or trail smartheadtrade works with presta and schrader valves without swapping parts this bike pump has a folding t handle with kraton grip provides better leverage and comfort while pumping take a look at our comprehensive range of bike pumps leisure la