KARCHER PRESSURE WASHER LANCES K SERIES We have provided six options on the drop down list when you go to purchase this item, just choose whether your machine is between K1 to K4 or K5 to K7 and the style of lance. VP 145 VARIO POWER JET 2.642-725.0 Vario-Power spray lance: spray lance with variable pressure control from low-pressure detergent jet to high-pressure jet. For use with K4 - K5 Machines. VP 180 VARIO POWER JET 2.642726.0 Vario-Power spray lance: spray lance with variable pressure control from low-pressure detergent jet to high-pressure jet. For use with K6 - K7 Machines. VP 145 VARIO POWER JET The Kärcher short Vario Power nozzle comes with pressure regulation and is adjustable 360°, making it ideal for cleaning difficult to reach areas. For use with K2 - K4.