KARCHER Cup foam lance DUO Advanced 2, 700 l/h - 800 l/h 4112068KARCHER Cup foam lance DUO Advanced 2, 700 l h 800 l h Order No. 4. 112 068. 0 With the DUO Advanced 2 cup foam lance, Krcher provides the perfect foam lance solution for cleaning tasks with pressure washers that have a flow rate of 700 to 800 l h, but do not have Servo Control. The foam lance allows the user to switch to high pressure operation immediately. Thanks to its robust base body with durable nickel coating, it is also ideally suited for use