Karcher FJ 10 C Foam Jet with Car Shampoo 3-in-1 Connect ‘n’ Clean foam nozzle with car shampoo. The quick-change system for applying detergent allows rapid switching between different detergents with a single click. The detergent Dose can easily be adjusted on the foam nozzle (yellow knob). The jet level can be adjusted as required. Suitable for all Kärcher pressure washers of the K 2 to K 7 classes.