- Polish and make old stone floor new !    DS Floor discs will guide you to the way    of renewal. - Available on many kinds of stone as    granite, marble, terrazzo and so on.   Outer Diameter Specification Remarks Height Grit 3.5"(90mm) 5.0 #50, #100, #200, #400, #800,#1500,#3000, DF(Black or White)   4"(100mm)