It really all depends on what finish you are stating with. Unless the finish is bead blasted or polished I’ve used 3-M 07448 GRAY FINE GRIT, and 07445 WHITE VERY FINE GRIT SCOTCH BRITE SCUFF PADS with great success. Deeper scratches can be easily removed with heavier grit RED or GREEN SCUFF PADS if necessary and then those scratches blended with the other pads. With a little patience and practice you will be able to match the surrounding areas perfectly. I found the gray and white scuff pads I was looking for at Grainger Industrial Supply.