Foam spray gun. With 6 settings for foam mass and density. This consists of the water spray gun, which you connect with the connector on the bottle, into which the special foam shampoo enters, in the right amount along with water. After we connect it with a watering hose, we spray the foam on the car and then, depending on the shampoo, we soap or rinse! The rich foam protects the car from scratches and unwanted stains.