[Compatible] The cleaning hose does not fit the old Karcher k2 model, which is the new model. Suitable for Karcher K series (K2-K7) pressure washers with an M22 adapter fitting for quickly connecting and separating the pressure washer and the gun.[Easy to Use] On one side of the high pressure hose is the professional Karcher-style M22 adapter for immediate connection to the pressure washer. On the other side is a Karcher-style bayonet fitting that allows you to quickly insert the trigger gun and release the hose by pressing the yellow (not black) button on the trigger gun.[Flexible and Durable] The high pressure extension hose is very flexible, with a durable rubber coating, resistant to abrasion and sunlight, and is compatible with Karcher threaded pressure washers. Pressure washer hoses are made of high-strength steel braid with rubber coating.[Wide Range of Applications] The flexible hose with anti-kink protection easily and quickly cleans clogged pipes, drains and gutters, and can also be used for rinsing floors, unblocking drains, downspouts or blocked toilets, etc.