The Bestway Air Step 1600 ML Manual Air Pump inflates and deflates tubes, air mattresses, rafts, toys, and other inflatables. Designed to provide maximum airflow, this pump has a stroke volume of 1.6 L per cycle and features a large air chamber for rapid inflation. It delivers a continuous stream of air on each down stroke. It's great if you don't have access to electricity and for times when you need to inflate your items on-the-go. Plus, three universal valve adapters are included to fit nearly every inflation valve, allowing you to inflate a variety of items with the same pump. With its compact design, the Bestway Air Step 1600 ML Manual Air Pump is perfect for trips where you need to pack light.