Supreme. 3" x 8mm Metal Chip Resin combo. Concrete Polishing Pads. Semi Metallic Chip resin pads are combination of resin and metal. These pads are designed to cut like a metal bond diamond but able to be forgiving like a resin. This pad has a beveled edge which helps aid the machine when going over joints. These pads are excellent for getting out scratches and helping transition between the metal and resin steps. These pads also work great for your first step in opening up a floor in polishing process.