These adapters are designed so you can use a variety of male caps on cans with male valves.
Blue and Grey adaptors are slightly different sizes to suit different brands of cans.
Grey adapters have been tested to work well on Aussie Export cans and seem to fit well on other Australian brands of spray paint.
Blue adapters are better suited to American brands like Rustoleum.
They can also be used as a mixing cap for transferring paint from male to male cans.
Made in USA