Karcher Hose Trolley HT
Clever design means this Karcher cart can be wheeled around, but folds for compact storage.
The instructions could make it clearer that you need to cut off a bit of the hose to run from reel to tap, yet there are quick-release connectors throughout, plus a better spray gun than on most.
It unwinds easily, but the hose needs guiding when reeling in.