The strange key teeth is half of a mysterious key found inside of Movario's base during the While Guthix Sleeps quest. When used on a mithril dragon with the strange key loop, it will fuse to form the dragonkin key. Players need to tag the dragon by attacking it once for this to work.
Disassembly
Defined properties:
All Junk chance: 98.9
Junk chance: 98.9
[FAQ] • [doc]