You will need a 1/2" hose length with a female hozelock end-stop, from your van to the hosereel. This plugs into a male hozelock on the side of the hosereel (as standard).
Microbore can come with an inline bore convertor to fit onto the hosereel. On the other end you would have a connector of your choice.
The EZ-Snap connectors are an End-stop type connector, I personally use the EZ-snap connectors as they so easy to use, and robust, whilst being very compact.
Alex