The GM71 is a super compact and lightweight, high pressure, micro floor pump with an in-line gauge. At only 11", the maximum pressure is 140 psi. All BV pumps are reversible for Presta and Schrader valves. Both the foot stand and handle fold up into a small package. The long hose is flexible and the rotating nozzle allow for easier operation. It comes with a holder that mounts where a bottle cage mounts on a bike. Velcro straps and heavy duty cable ties are included for mounting on other parts of bike frames. With 3 mounting options and packed with features, the micro pump is highly versatile and flexible. Specifications: Material: Aluminum Max. Pressure: 140 psi Valve Type: Presta and Schrader Weight: 7.4 oz. Dimensions: 10" x 2" x 1".