A further tip if you buy one.
The nickel plated hose connector on the inlet side of the trigger is meant for a quick release connector. So if you don't have the appropriate female conector or can't get one, remove it and replace it with the brass one from the end of the black hose. (remove the spring and ball bearing from inside the brass one as you won't need these)
It's a perfect fit and it has a small 'O' ring inside that makes it water tight. A pic similar to this has been posted before but this is my one.
However, if you can get a female quick release connector this is even better as you can disconnect at the trigger instead of inline. I find this makes things easier for carrying and transporting the pole.
There is a trader selling these on eBay at the mo as well. Type in the search box, "
6mm Microbore Quick Release Connector" and that should do it.