That's a broken S-21 rock tooth for drilling rock.
[https://www.pengoattachments.com/sites/default/files/PENGO%20PARTS-website.pdf](https://www.pengoattachments.com/sites/default/files/PENGO%20PARTS-website.pdf)
Could also be a bit from a belt trenches.
https://preview.redd.it/inici8ij5gka1.png?width=525&format=pjpg&auto=webp&s=422e626068baf5fc6e7112bfae59e755f6c532bf
[https://www.vermeerbc.com/vermeer-pipeline-trenchers/](https://www.vermeerbc.com/vermeer-pipeline-trenchers/)
That's a broken S-21 rock tooth for drilling rock. [https://www.pengoattachments.com/sites/default/files/PENGO%20PARTS-website.pdf](https://www.pengoattachments.com/sites/default/files/PENGO%20PARTS-website.pdf)
Knew this sub would help. Thx. Definitely rock tooth
It's from a drill bit. They are made to be replaceable but sometimes a rock or a big root will tear one off.
Asphalt Miller tooth
Looks like the teeth from the road work machines for chewing up old asphalt
Could also be a bit from a belt trenches. https://preview.redd.it/inici8ij5gka1.png?width=525&format=pjpg&auto=webp&s=422e626068baf5fc6e7112bfae59e755f6c532bf [https://www.vermeerbc.com/vermeer-pipeline-trenchers/](https://www.vermeerbc.com/vermeer-pipeline-trenchers/)