The fabulous Gilmour Foamaster the new way to wash your machine.This gives foam galore, just add some snowfoam and your favourite car shampoo plug in to the water supply and have a ball in the foam.Chemical resistant to all acids and cleaners,Quick set dial for mixing ratio,easy to fill wide mouth.Water pressure 40-90 psi,output 5.5 litres per minute.Anti-siphon protects water supply