The topeak joe blow mtb floor pump comes with a large easy to read gauge pressure indicator dial with psi and bar index so you can see what pressure your tyres are at this unique mountain bike specific floor pump features a super sized steel barrel designed to deliver the higher volume required of large off road tires and comes with a a twinheadtrade connector with an extra long hose to easily connect to presta schrader and dunlop valves the topeak joe blow