... netsBrown,black1520080(1)Generally,please chose reasonable hardness cut off disc to reduce its attrition wear.These ... makes our disc more strength,4.Sharpness,more powerful capacity,5.Extremely precise and straight cutting, ... After cutting 10 times,the diameter of the cut off disc:94mm4.After cutting 20 times,the ... damage.2.Do make sure operating speed of machine, does not exceed speed marked on wheel. ...