Wide compatibility: Designed for Karcher K2, K3, K4, K5, K6, models, this set is a perfect fit for these pressure washer models (not suitable for K1700, K1700 for CUBE, K1800, K1900, K2000). Wide application: With the quick connection adapter and adjustable nozzle, you can rapidly clean car floors, rims, sink crevices, as well as spray plants, clean large areas, and wash RVs.