This is a rather unique product to be made available to DIY.
Its called a water feed pole and is used by professional window washer's to clean high buildings without ladders for safety.
Pure water is created by forcing tap water through resin and a water filter in the blue tank. The pure water is residue free and so you get a perfect clean every time.
The pole extends to allow you to clean not only ground level but your first level windows as well.
Its easy to use and a demonstration will be provided by me on pick up if you have not used one before. within a few minutes you will be able to use system yourself.
All associated equipment in photo to achieve the clean is part of the hire fee.