This is a gear from the automatons that appeared in the Abandoned Temple in Ohbanahara. It seems likely that the automatons were created by the warrior monks who used to dwell in the temple, as their entire construction utilized unique, unconventional technology. This gear displays the same technology. It is a subject of much interest, given that studying it could produce additional scientific breakthroughs.
A gear from the automatons found at the Abandoned Temple in Ohbanahara.