Sterling pumps feature a stunning high polished CNC, laser etched aluminium body. A universal head switches automatically between Presta and Schrader valves. Large dual piston allows 2 effortless modes, 1-40 psi high volume and 40-100psi high pressure. Available with or without gauge.Air switch: High volume / high pressure,Material: 6061 aluminium,Pressure: 100+psi / 7+bar,Warranty: 5 years,Weight: 116g, 141g (w/gauge),Length: 171mm, 198mm (w/gauge),Gauge: 100 psi.