Now THIS is a cool keychain. If ever a keychain were to be 'tough' this one would be it!
An ultra rare, ultra interesting Metal Sonic keychain! And it's a completely 3D figural as well!
What makes this even better is the accuracy and the great job they did with it. The thing is spot-on! Check out the metallic silver and gold-tone paint, as well as the 3D details for the shoulder cuffs, engine well, and shoe bolts. What did they do with all the pointy fingers? Cleverly, they set the hands on the

legs so they wouldn't break or look dumb! Metal Sonic items could sometimes suffer from the odd eye position, but this one is once again, quite well made in that area. More impressive still is the size. Noting the chain and ring size, you can tell that this isn't even that big, and they've done that good of a job.
For such a fan-favorite it's a wonder more Metal Sonic doesn't show up. Still, this detailed keychain is sure to be a collector's highlight!
This keychain is likely part of a set that includes the Knuckles keychain with the same very thick wire loop seen here (it is on Keychains page 3). Notice it is somewhat "G" shaped with a point going inward. A Sonic, & Tails should also be on this set as well.