The Karcher VP180 Vario Lance (2.642-726.0) is designed to work with all Karcher K7 Pressure Washers. The Lance can be changed from detergent mode up to a max cleaning mode by simply twisting the lance to the desired setting. Please note that this lance is not compatible with machines produced before 2010 unless used in conjunction with Adapter M. Ideal for cleaning smaller areas around the home and garden, such as walls, paths, fences and vehicles.