I admit the picture isn't very good. I'll snap another one as soon as I get the chance but I'm out of town right now. Anyways, I threw the image into Gimp and tried to highlight the edges. As you can see, the protector is probably meant for a 23T large cog cassette. It barely reaches the edges of my 24T and my 27T overshadows it by a large margin. As such it's really useless but then again you can't see it. Also, it doesn't look as bad as other spoke protectors I've seen and is pretty securely attached (making it hard to remove) thus I just leave it on. Most people never even see it.