... netsBrown,black1520080(1)Generally,please chose reasonable hardness cut off disc to reduce its attrition wear.These ... affect the cut off disc hardness:The amount of resin bond to join,Forming density of abrasive,Sintering ... damage.2.Do make sure operating speed of machine, does not exceed speed marked on wheel.3 ... 2x25.48x3/64x175008020438x438x105200 OEM 105X1.2X16mm abrasive cut off tools for metal