The 2012 Jeep Wrangler key shell is meant for customers who have a working remote head key that is cracked or broken; you can purchase the shell and place the working remote unit inside. The blade is molded into the plastic head of the shell, so it must be cut to match your original key blade before you can use it. To cut this 2012 Jeep Wrangler shell, please contact a local automotive locksmith or dealership. The price for cutting this key shell varies depending on your location. Once the new key shell is cut, you can remove the remote part from your original key and place it into the new shell for normal working functions. The new shell will NOT start the vehicle without the original remote part inside of it.