Not sure what I have.

[Mlee]

I ran across these stones cleaning out an old tool box in my shop, forgot I had them. Is there any way of knowing what I have and what they would be good for? Thanks

 

[kelbro]

Tool sharpening stones. A little rough even for most pocket knives. Good for chip removal and a good toothy edge for cutting things like rope, cardboard, or canvas

 

[Steve56]

The third image looks like a hunk of buffing wheel compound.

 

[Slash McCoy]

Second one... dimensions? Kinda looks like some kind of barber hone. What is in the oval indentation near the left hand end? What does it say there? Is there anything legible on the box or inside it? The carborundum combos, yeah coarse tools, knives, stuff like that. Useful, but not for razors.