... 3. Never marks More features:-1.Flexible polishing pads, also integrated grains with resin ... on portable grinding machine and operated by hand.5.Never mark the stone or burns ... polishing light color stone finally, and black buff for dark color. Other sizes and parameters:Size(inch)3, 4, 5, 6TypeDry Polishing Pad ... , Wet Polishing PadGrit50,100,200,400,800,1500,3000 ...