The Hozelock 2789 High Spikes are high quality and made from UV stable plastic. They can be combined with any of the Hozelock drippers, mini sprinklers, and more commonly micro jets.Used to raise the pattern (above the foliage) by up to 35cm. Designed for use at the end of line (i.e. at the end of the 4mm hose). Can also be attached by branching off from 13mm supply tube.Pack of 3.