Metal disc for removing deep scratches out of glass combined with the paste red 93110 and 93100 paste pink you can erase scratches which are in the glass.
Deep scratch removal in 3 steps
Step 1 With the metal disk and paste red 93110 grind away glass to reach the same depth as the scratch.
Step 2 Requires a clean metal disk and the paste pink 93100 to level the depth difference between the grinded and not grinded area of the glass in order to minimize distortion which makes it a lens.
Step 3 Requires the 93054 Scratch Away glass polishing disk to polish the overall surface clear again. Keep in mind that taking out deep scratches requires enough space to level out.