... the risk of scratching or damaging its surface. With a 6-micron (uM) grit, these versatile polishing pads can help ensure there ... , stainless steel , plastic and composite ferrule.*Micron graded materials on uniform polyester backing.*9,6,3,1 um diamond polish film and ... .Specification:Polish film O.D.:112 mmFilm micron grade:9 um , Diamond , Blue ( 3M-9D )6 um , Diamond , Clear ( 3M-6D )3 ...