What does a Presta valve pump look like and how does it differ from other types of valve pumps?

A Presta valve pump has a narrow, threaded metal valve that is typically found on high-performance bicycles. It differs from other valve pumps, like Schrader valves, by being thinner and requiring a separate adapter to inflate. Presta valves are commonly used on road bikes and some mountain bikes, while Schrader valves are more common on standard bicycles and car tires.