The TeeJet SJ7A works great for the yield of liquid feritilizer with a big dripping and rate-poor application. With this type of yield you can avoid acid burns. The optimal sprying height is 75 -100 cm. The integrated and colorcoded dosingdazzle can be tooked out for cleaning purposes. Material plastic. Fitting nozzle filter, look at the nozzle table, extension adapter for the montage can be found below. The yield can be found below, too.