Detailed Product Description metal cutting wheel is Professional cutting granite ,hard clay ,concrete and hard stone .This cutting wheel is ordinary in hardness ,with ... can supply grinding wheels and cutting wheels for steel or stone 2) Size: 4", 4-1/2", 5", 7", 9", 12 ... ) T27 depressed center grinding discs4) T 6 Cup wheels = grinding stone The meaning of "T41 A30 R5BF 80m/s":1) T41 ...