The Hozelock Adjustable Dripper is made from tough UV stable plastic and adjustable from 0-40lph. Use end of line of 4mm micro supply pipe (ie at the end of hose) or insert into 13mm supply pipe. 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.