Does anybody know what these rocks are ?

[1320800]

The stone with lines is double sided

 

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[pannerman]

Hard to tell the size from the pics. The one on the left looks like a grooved mano. The right might be an arrow shaft abrader or net weight.

 

[1320800]

I agree with you that the one on the right looks like a net weight. But the one on the left I have no idea what it
could be

 

[rock]

OK so how big are they? Cant give a answer unless we get more info and extra pictures are important. Also what state they were found in really helps. Welcome to the site, rock

 

[1320800]

Here are some more pictures and they were both found in pa.

 

[rock]

ty we will have to wait for the northern people to chime in.

 

[GatorBoy]

It's probably going to take a little while to figure out exactly what the one on the left is.. the one with the hole looks natural.
I don't think either are Native American artifacts.