... 250mm 2. Type: Single row, Double row, Turbo, Swirl 3. Grit No.: Course Medium, Fine Diamond Cup Wheels, Grinding ... polishing marble, granite, concrete, porcelin tiles, masonry, natural & artificial stone surfaces. Products Description:1. Diameter: 100mm-250mm.2. ... marble, granite, concrete, porcelin tiles, masonry, natural & artificial stone surfaces.3. Fast cutting with minimal dust, used dry or wet ...