Experience 50% higher cleaning performance with the Kärcher Eco!Booster Nozzle, designed for efficient and thorough cleaning while using the same amount of water and energy. Compatible with all Kärcher K 4 pressure washers, this advanced nozzle ensures faster, eco-friendly results without compromising on power. Features and Benefits 50% higher water efficiency- Based on 50 % more surface area that can be cleaned with the same amount of energy and water compared to the flat jet. 50% higher energy efficiency- Based on 50 % more surface area that can be cleaned with the same amount of energy and water compared to the flat jet. Hugely versatile in application- Particularly suitable for delicate surfaces such as paint or wood Compatible machines K 4 Classic K 4 Power Control Car & Home Plus K 4 Power Control Flex K 4 Power Control Flex Car & Home K 4 Power Control Flex Car & Home Plus K 4 Power Control Flex Home.