What is this?

[cat-face timber]

I found these when I was out in the woods the other day.
These look like something that cuts trees, but here we use saws.
Not sure, but I figured you would know.
Thanks.

 

[madhatte]

Tooth for a stump grinder? The cutting surface is sort of the right shape but I've never seen one that mounts that way.

 

[1270d]

Inserts for a hotsaw

 

[paccity]

bitt for a harvester disc.

 

[treeslayer2003]

yep, feller buncher teeth.