... fixed on polishing machines, which is suitable for grinding stones. Diamond Fickert, grinding abrasive,metal brick, diamond abrasive, metal abrasiveare ... fixed on polishing machines, which is suitable for grinding marble and granite, smoothing rough spots on concrete and ... of concrete, masonry, brick, block and natural stones. Features:1) Used for grinding and polishing stones2) Grit: #30 - 2203) ...