Hozelock advanced pressure compensating dripper is for use at the end of the line and always gives 4 L/hr. water flow, regardless of its position in the system. The dripper is made from tough, UV stable plastic and has an in-built filter. Automatically self-cleans and automatically shuts off when the 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 & Oslash4mm and & Oslash13mm supply hoses. Pack Quantity 5