cutting discs 1) We can supply grinding wheels and cutting wheels for steel or stone 2) Size: 4", 4-1/2", 5", 7 cutting ... for steel or stone2) Size: 4", 4-1/2", 5", 7", 9", 12", 14" and 16" Material (the reinforced cutting and grinding discs ... GC Total types of products (3 types of cutting and grinding discs in the structure):1) T41 flat cut off ... .p.m, means meter per second, rotary speed cutting discs