[Compatibility]: This cleaning hose is not suitable for the old Karcher k2 model, this is a new model. Suitable for Karcher K series (K2-K7) pressure washers with M22 adapter for quick connection and separation of the pressure washer and lance. [Easy to use]: On one side of the high-pressure hose there is a professional Karcher M22 type adapter for direct connection to the pressure washer. On the other side there is a Karcher type bayonet fitting for quick insertion into the trigger gun, which releases 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 sun, and is compatible with Karcher thread pressure washers. The pressure washer hoses are made of high-strength steel wire 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