3M Assorted Grit Emery Cloth Sandpaper, 3.67-Inch by 9-Inch, 3-Pack - 5931, Pack of 5

Also not Emery.

Make sure you know that you’re getting 5 packages—each with 3 grits each: coarse, medium, fine, probably about 80 grit, 120, and 180.

I would definitely recommend these on metal. Perfect for removing rust off metal.

Tried few other brands this one is the most enduring