Fire Starter / Flint Sheath with keychain hole

So my friend Danny got this cool Flint / Fire Starter from Amazon and thought it would be great to have on his key chain. Unfortunately the part that attaches to his key chain was way too big so I created this sheath for him which holds the Fire Starter perfectly without glue and sits perfectly on his key chain. I will add some pictures of the sheath in action later. I created this using 123 Design and have included the source files (along with the .stl files) if you'd like to change anything