Some pumps fit both types of valves, whereas others do not, but adapters are available that enable the pump to fit any type of valve. "All valves adjustable connecting systems," also known as AVACS, enable the pump to fit any type of valve found on a bicycle, and it also has the capacity to fit onto other universal inflatable products, such as balls, paddling pools, and rubber rings. The AVACS feature is commonly available on pump models and can also be bought as a separate valve attachment.