As used on our GP100 Winches, MBS and FreeSpool Drums. They can also be used for air operated differentials and air horns. 12V operation, 1/8 BSP air connections on the input and the output. Maximum air pressure of 150 PSI with an aluminium housing for corrosion resistance. Using more than two ? then why not mount them on the Gigglepin Air Manifold to help keep them tidy.