They have a shaped handle and a compression-type locking device to set the length that you need. Brushes and leaf-nets are easy to snap into the end of the pole - so you can quickly change fittings for different applications. Here we have our high pressure 1 1/2" Internal Diameter, 4 Bar filter backwash hose. The backwash process reverse- killed, and this dirty water should be led away to a suitable drain. If you do not want a fixed rigid hose lying around, then maybe a coil of flexi hose offers you a choice, if you wish to roll it out for that five minute backwash every week or so.