Quickrelease replacement trigger gun for Karcher electric pressure washers manufactured around 2009, compatible with K2, K3, K4, K5, K6, and K7 models. Important compatibility note: some early versions used an older CClip style spray gun. If your current gun is CClip, this trigger gun will not be compatible. Connection system: uses a bayonet connection to attach to all Karcher accessories and a rapid connection system to attach to the pressure hose, with the exception of K1700 Cube, K1700, K1800, K1900, and K2000 models. Safety feature: quick connect type gun includes a child safety lock to help prevent accidental operation. Benefits: reduces downtime with quickrelease design, allows easy swapping of nozzles and accessories, and provides secure, leakresistant connections for reliable performance. Use scenarios: Cleaning a car, motorcycle, or bicycle at home for a streak finish. Removing dirt from driveways, patios, siding, or concrete surfaces around the home. Cleaning outdoor furniture, decks, and garden tools to maintain appearance and safety.