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FITS PRESTA & SCHRADER VALVES – The screw-on valve head is made specifically for Presta (French) and Schrader (car) valves. Flip the insert, screw it on and pump: the threaded connection seals tightly and stays securely in place without slipping off. PROTECTS YOUR VALVE – The extendable, lockable hose with 90-degree connector puts distance between pump and tyre. Less strain on the valve and more room for every stroke – so the valve stem stays intact even during a hectic roadside puncture repair. FEATHERWEIGHT, ONLY 86 GRAMS – The ultra-compact NanoBoost fits in any jersey pocket, saddle bag or trouser pocket and you will barely notice it on the go. CNC-machined aluminium makes it precise and robust – the mini pump for everyone who counts every gram. SECURE ON THE BIKE, READY WHEN YOU NEED IT – The included frame mount holds the pump firmly on your bike and the dust cap protects the head. When you get a flat, you are back up to pressure in seconds and ride on with compact pumping power up to 5.5 bar. 5-YEAR MANUFACTURER'S WARRANTY – Over 62,000 Alphatrail mini pumps sold and more than 1.1 million customers trust Alphatrail. Recommended by pro MTB rider Daniel von Kossak. Built to last with aluminium and robust mechanics, with straightforward support should you ever need to make a warranty claim.