A car foam sprayer is an aid used during the car wash process to create a thick foam from the wash solution that is sprayed onto the surface of the car. The use of a foam sprayer effectively wets and soaks the surface of the car, making it easier to remove and reducing the risk of paint scratches by minimizing manual contact.

A brass threaded quick coupling is an element used to connect lines and hoses. It is made of brass with a threaded end and a quick connecting head at the other end.