... Product Description stone cutting discFeatures: 1) We can supply grinding wheels and cutting wheels for steel or stone 2) ... Size: 4", 4-1/2", 5", 7", 9", 12", 14" and 16"Material (the reinforced cutting ... Total types of products (3 types of cutting and grinding discs in the structure):1) ... discs4) T 6 Cup wheels = grinding stone The meaning of "T41 A30 R5BF 80m/ ...