Review on 🚲 LEZYNE Pocket Drive HP Bicycle Hand Pump: High Pressure 160 PSI, Presta & Schrader Compatible for Compact Bikes, CNC Aluminum Construction, Durable ABS Flex Hose – Efficient Bike Tire Pump by Leslie Matlak

This is a great pump to carry around in your tool bag. It's about the size of 1.5 CO2 canisters end to end and is very reliable. The threaded portion of the valve stem provides a good seal and efficient airflow in unstable conditions. I've used this a few times for group rides when there was no more CO2 - works great for higher pressure tires. It also has an exhaust valve to release a small amount of air. This is especially useful for mountain bikes and gravel bikes transitioning between trail and pavement when tire pressure needs to be adjusted. Small enough for a pocket or bag. Very impressive.