... should be written according to the order, shape, size, abrasive material, grain, grade,and speed2.Suitable for the work pieces made ... flexibility.Suitable for process weak Tensile strength metallic and Nonmetallic material, i.e.Our company supplystraight wheel,type 2 cylinder wheel ... sides wheeltype 8 taper cup wheel, type 9 dish wheel)Material(A,WA,GC,C,DA,DC,PA,38A)