1\2 x200 hose coming from the pump to the foot valve. After that 150 foot of 3\8 for 3 or 4 inch lines and 1\4 for the. 2 inch and 1-1\2 line. Smaller than that is not worth messing with. For roots and really hard stuff, you need as much pressure as you can get. For soft stuff like grease and sand you want lots of volume or you’ll be there all day. The better heads will be made to match your machines psi and gpm. I have 2 sets, one for the 4 gal 4000psi and one set for the 8gpm3200. You can by off the shelf cutter heads too, that do ok for most residential stuff. Oh and don’t use hot water on grease. And your pump needs a pulse valve.
