Check the listing for details. 4" ADT Metal Bond Diamond Polishing Pads. Condition: New. Listed at 10.95 USD. ADT Metal-bond flexible diamond polishing pads are designed to wet-polish all straight or contoured granite and concrete edges. Metal powders are mixed with resin to provide a tighter bond to diamonds. They are more aggressive and last longer than traditional resin bond pads. This complete set comes with 50, 100, 200 in metal bond, and 400, 800, 1500, 3000 grit and a buff pad in resin bond. Back colors are as follows: lime green, red, yellow, light blue, green, orange, pink, and white respectively.Same flexibility as that of resin bond pads if not more flexibleVelcro backing allows fast pad changes during the polishing process.Set of 8 pieces will include one each grit from 50, 100, 200, 400, 800, 1500, 3000 grit and a buff padSet of 7 pieces will include one each grit without a buff pad