Advanced pressure compensating 4 LPH end of line dripper. Made from tough UV stable plastic. Use end of line (ie at the end of a hose). Always gives 4lph regardless of position in system. Flow based on 1.5 bar pressure. Built in filter, Automatically self cleans, Automatically shuts off when pressure below 1 bar. Good for hanging baskets, troughs, growbags borders, greenhouses, cloches, vegetable gardens