Looks like you could put a grinding wheel, or maybe a buffing wheel on the one end.
Mike
That's right. It's called a bench grinder mandrel, or a saw arbor heavy duty shaft with 2 pillow blocks
Henri
Yup, you could put a saw blade on it and cut your fingers off.
Or, you could put a wire wheel on it and pick wires out of your hide.
Or, you could put a grinding wheel on it and hope the exploding pieces don't break a bone in your face.
All kinds of options.
Actually, it really is a simple pillow block arrangement with a grinding wheel adapter.
Your imagination is the only limit.