These Hozelock advanced pressure compensating drippers are for use at the end of the line and always give 4l/h water flow, regardless of their position in the system. The drippers are made from tough UV stable plastic, and have an in-built filter. They automatically self clean and automatically shut off when pressure is below 1 bar.Ideal for hanging baskets, troughs, growbags, borders, greenhouses, cloches and vegetable gardens.Use at the base of small plants, secure with a stake.Suitable for 4mm and 13mm supply hoses.Pack of 5.