Here is a picture of the Cobra emblem on my flip-key.
I lost my pin when I was getting the key cut. Can’t find any with similar dimensions around hereLocal locksmith or Walmart. You may have to remove the key blank from the transponder.
On my flip key you just remove the small split pin.
View attachment 1560006
The diameter is around 1.7mm...not many drill bits are that size. Plus, the roll pin compresses to fit and keeps the key fit snug when inserted, preventing it from wobbling back and forth.Find the diameter (as suggested by snoopy49) and go to any good hardware store and tell them you need a roll pin in that size.
You may need to use a dremel to cut down the length.
A gunsmith would have those pins too.