Review on Compact Mini Bike Pump: Portable Handheld Bicycle Pump for Schrader and Presta Valve, Lightweight Frame Pump with High Pressure - 120 PSI by Terry Kohl

Do not buy this pump. I needed this pump when I needed to inflate a bike tire on a car ride. The pump appeared to be attached to the valve, but as soon as there was slight pressure (less than about 20 psi), the pressure dislodged the pump from the valve. This kept happening whenever I tried to get the pump working again. If I hadn't met another cyclist with the pump running, I would have had to walk 10 miles to get my bike home. I have sent a message to the seller and have not received a reply. I advise others not to purchase this item or anything else from this seller. The product is defective, the seller does not respond.