When bridging greater heights, such as firs, fruit trees, or deciduous trees, extension tubes are very helpful. Tall trees pose no problem for high-performance sprayers, as they can achieve the necessary working pressure of 6 bar. Equipped with the right extension tubes, trees up to approximately 4 meters high can be treated without any issues. For pressure sprayers (3 bar), extension tubes of up to a maximum of 1 meter are recommended.