The Crankbrothers Sterling Pump Large with Gauge is high pressure good looking hand pump that will get you out of any punctured situation. The pump has been constructed from a high polished CNC, lazer etched aluminium body and strong, durable composite. This gives the pump great posture when it comes to pumping and also the professional finish that everyone is after. The pump features a pressure gauge that tells you the precise pressure that you are pumping too. The large dual piston allows for two effortless modes, 1-40 psi high volume and 40-100psi high pressure, which make it ideal for both road and mountain bike tyres.