This help tube makes the portable pump easier to use. When you plug the base of the portable pump directly into the valve and fill the air, you will feel very difficult to fill it.
Use the help tube to create an angle that is easy to push the pump.
Portable pump (American type) extension tube (Presta type) total length 5.7 inches (144 mm)
The wheels and pumps in the picture are not included.
Cannot be used with Schrader valves.