[tarheel]

They are called nutserts. I think they run about $2.50 for OEM. I got them from All Things Jeep I believe. They will sell you the bolts too but go to a hardware store and get some grade 8 with hexhead tops. The OEM bolts are Torx. I had to send them back since the first one stripped.

Google nutsert tool and you will find how to make one cheap.