I got my Rainger grab handles in on Friday and installed them over the weekend. They are straps wrapped in paracord, I chose all black, but they have numerous colors to pick from.
Here are the steps I took to install mine.
First you have to remove the OEM handles. I forgot to snap a pic or two of them in the car, so I did it after.
All I did was take a small flat head screw driver and pressed/twisted it in on each side of the plastic caps. The caps will become lose where they can slide in/out. From there, you can basically pull the handles out of the roof.
The kit comes with all the hardware, but I did end up going to my local hardware store to pick up some extra washers to make it a bit easier.
The anchors slide up into the roof of the car, and you slide the base up and it acts somewhat like a zip-tie. You would need to rotate the entire thing to get the base to site horizontal with the opening, but there is not enough room in the cavity for the metal anchor to rotate. So I would get something looking like this:
It was a bit lose, and not super secure. So this is where the new washers I picked up came into play.