The Roadie TT Twin Turbo is a full metal, pocket sized mini pump that transfers larger air volume from a bigger diameter outer chamber into a smaller diameter inner chamber to deliver more air at higher pressures to fill tyres 50% faster and easier. Integrated dust cap keeps pump head clean and thumb lock lever ensures an air-tight seal.TT TwinTurbo Technology: Larger volume outer barrel compresses huge amounts of air into a smaller diameter inner barrel to deliver more air and higher pressure with less strokes.Presta head with aluminium thumb lock lever ensures air-tight sealSide mount bracket includedHEAD: Presta with integrated dust capBARREL / THUMB LOCK / HANDLE: AluminiumCAPACITY: 160 psi / 11 barVOLUME PER STROKE: 41.4 ccADDED FEATURES: Side mount bracketSIZE: 19.5 x 3.3 x 2.35 cm / 7.7 x 1.3 x 0.9 WEIGHT: 100 g / 3.53 oz