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/cycle and features a large air chamber for rapid inflation. It delivers a continuous stream of air on each down stroke (or step). It's great if you don't have access to electricity and times where you need to inflate your items on-the-go. Plus, three universal valve adapters are included to fit nearly every inflation valve, so you're able 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.