Super compact mini-pump with switch between high volume mode and high pressure mode. High volume mode uses air from both barrel and shaft while high pressure mode uses only one for easier pumping. Aluminum barrel and shaft. Bottle cage mount included. Presta valve compatible only. 84 grams. Lifetime warranty. Like almost all mini-pumps it is hard to achieve much over 60 or 70 psi. Great for a mountain bike or cruiser but only adequate to limp home on if you’re riding a road bike with narrow…