The Bestway Air Step 1400 ML hand pump inflates tubes, air mattresses, boats, toys, and other inflatable items and allows them to be deflated as well. This pump is designed to provide maximum airflow, with a stroke volume of 1.4 L per cycle and a large air chamber for quick inflation. It delivers a continuous airflow with each downward stroke. It is ideal for situations where there is no access to electricity and you need to inflate your items on the go. Additionally, three universal valve adapters are included, which fit almost any inflation valve, allowing you to inflate a variety of items with the same pump. With its compact design, the Bestway Air Step 1400 ML hand pump is perfect for travel where you need to pack light.