This is a model that lets you connect the extended (I used a vitril hose 8x12mm) drain hoses of the sunroof and the condensation hose of the airco all to the same point. This way the original drain hose adapters that connects to the firewall becomes unused so they can't leak water into the car anymore.
For mor information search on youtube on “Infiniti G37 sunroof drain fix airco reroute” (for example this video or this video).
The author marked this model as their own original creation.