The soap dispenser works with all Krcher K2 K3 K4 K5 K6 K7 machines that have the rectangular bayonet connection. The snow foam lance is used for covering and sticking thick foam on vehicles. The size of the soap bottle is 700ml, which is large enough to distribute to 3-4 sedans with a single fill. The foam atomizer is adjustable and you can adjust the amount and foam fan as you like. Made of strong plastic and brass hardware, it is much lighter, allowing for flexible and convenient operation. Functions: Hole Size: 1.1mm. Pressure range: 2100 PSI / 15 MPa Bottle capacity: 700 ml. Material of Construction: Solid brass, nylon and high density polyethylene bottle. Maximum water temperature: 60. Adjustable foam consumption: yes. Adjustable spray width: yes. Manual: 1. Fill the liquid bottle with water (for best results use hot water, 20% shampoo + 80% water). 2. Shake the liquid bottle to mix the shampoo with the water. 3. Attach the liquid bottle to the foam lance assembly.