Red SRT Hellcat Key Fob Shell. This listing is for the shell only and does not include the internal board or battery. You will need to purchase a board separately to program it. This shell is perfect for those wanting to upgrade their standard black key fobs to a sleek red version or replace an old red fob. To use, simply open the shell and transfer all internal components from your current key fob. This is not a cover or case; it is an actual key fob shell.