The Hozelock Adjustable In-Line Dripper is made from tough UV stable plastic and adjustable from 0-40lph. Use in-line of 4mm micro supply pipe (ie cut the hose and insert). Twist the cap to adjust flow and coverage. Can be dismantled for easy cleaning. Good for hanging baskets, troughs, round containers, borders, greenhouses and vegetable gardens. Has a full circle coverage via 8 water outlets. Use at the base of plants and secure in place with a stake.