... sharp 2. long life 3. fine gloss 4. cost save diamond polishing plate / disc for granite marble grinding & polishing on manual ... guaranteed.Dia. 6”/150, 8”/200, 10”/250mmGrit #50, #200, #400, #500, #800, # 1500, Buff (B/W)Rough polishing: Diamond metal bonded ... , very sharp to remove the material, high efficiency.Fine polishing: Diamond resin bonded disc, excellent gloss achieved and low cost.Polishing ...