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Spanien, ever done any serious powerwashing? Many of the topics discussed about jetting are relevant or the same as in the powerwashing industry. Many new washers come with a variety of nozzles/tips. The nozzles have different color plastic on them(black,white,yellow,green, red) and, if you look close you will see a number of degrees associated with each nozzle. The green nozzle might produce a 25 degree fan, the yellow a 15 degree, and the red a 0 degree or pinpoint. The smaller the fan, the more concentrated the stream of water, thus more cutting/cleaning power. The larger fans are better for covering large areas and moving (flushing) junk away. Enter the Turbo nozzle. The turbo nozzle has a small ball in a socket with a 0 degree or pinpoint that rotates in a pattern at very high speed. This allows you to use the aggressiveness of the pinpoint and cover more area. Why not use the turbo all the time for everything? Because it's the most aggressive, it can also do the most damage! It will damage/cut wood, erode concrete, etc. The rootranger uses this turbo technology and will cut roots and descale iron pipe. Just turn a washer over 2000 psi and hit a 2 X 4 with a turbo nozzle. You'll see how it will handle roots! If you're comfortable with cables, that's great! But, if you're interested in jetting, you can use them against roots very effectively. There are posts here with Rick pulling back some of the "catch" with a jetter.