... 3. Applications: Granite, Marble, Concrete Diamond Floor Polishing Pads1. Diameter: 4", 5",6"2. Grit: #50, #100, #200, #400, #800, #1500, ... regrinding of rough surface and repolishing of granite&marble floors with most of floor polishing machines.Any inquiry, please feel ... Chan (sale08 at freet-tools dot com) 4"/5"/6"Diamond Floor Polishing Pads for granite,marble,concrete,tiles,porcelain,ceramic etc