The 48 cm Air Hammer™ hand pump from Bestway® reliably fills and deflates a wide variety of inflatable items. From swimming rings, air beds, inflatable boats, toys to many more, there are no limits. In order to achieve maximum air supply, the pump does its work during both the up and down movements. It can be easily switched between pumping up and pumping down. The product is characterized by its robust design and is also equipped with three universal valve attachments.