I tried these for the first time on some car wheels and the performance was poor, not sure there was a problem with the head itself but vertually zero foam came out.
Hello, if you could email firstname.lastname@example.org we will send a new spray head out. Just remember the product must be able to produce foam, the spray head doesn't have the ability to make low foam/foamless products produce thick foam.
Brilliant for wheel cleaners, the trigger makes them foam really good
Just bought one to try, and it is great used with rim, fantastic results