This three-way split cable is the best thing since sliced bread. They're an absolute lifesaver in convenience when setting up many lights, mixers and such or any sort of a PC workstation in a hurry.
The splits are different lengths each, which I find useful in reducing clutter because you almost never actually need three ends at the same distance. One thing is always closer and one further away.
The manufacturing quality is easily good enough for indoors use.
I never leave the office for a production gig without these.