Pressure wand on garden hose??

Nah, it's the same thing as what you have there, but is only $10. It has a trigger handle, and a adjustable sprayer. No foam, just soapy water.
 
wannafbody said:
I'm not sure what the real advantage of foam is. After all it is the lubricity of the soap which prevents marring.

yes and if you can make the soap cling to the car, it lubricates even more, which is the advantage of the foam gun
 
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