What is a RGB Rock Light?

Hi. rgb rock light is under glow lights, bluetooth app music remote .

will this fit in a vw mkV jetta GLI?

No, it is not fit in a VW mkV jetta GLI.

Do you have a halo kit for a golf 7?

Hello, this is for golf 5, we now don't have halo kits for golf 7, but you could check this link: https://www.vividlightbars.com/collections/all-round-halo-headlight-kits