This is a saw blade that I made for a game; the idea was that it comes out of the wall or floor as a trap -- but I still haven't ever gotten around to using it.
If you end up using it in a project, leave a comment and let me know so I can check it out!
Also it's available in my open source UnityCommon package in the Models folder: https://github.com/BrainSlugs83/UnityCommon
Check me out on itch.io at https://Brainslugs83.itch.io
FBX (Autodesk FBX, filesize: 526 KB)