The soap dispenser works with all Karcher’s K2 K3 K4 K5 K6 K7 series machines that have the rectangle bayonet connector. The capacity of the snow foam lance karcher is 750ML. Constructed by solid plastic and brass fittings, it is much more lighter, which brings a flexible and convenient operation. The snow foam lance makes thick frothy foam covering and sticking on vehicles. The foam cannon sprayer is adjustable and you can adjust the amount and fan of foam as you wanted. Used in cars, motorcycles, floors, windows, driveways, roofs, siding cleaning, etc. It's touchless car wash, it saves your time and energy.