1.Best quality and reasonable price 2. ISO9001 :2008 1.abrasive tools ... Nonmetallic material, i.e.Our company supplystraight wheel,type 2 cylinder wheel,type 3 Tapered one side wheeltype 4 ... Tapered two sides wheel,type 5 recessed one side wheel,type 6 straightcup wheel ... two sides wheeltype 8 taper cup wheel, type 9 dish wheel)Material(A,WA,GC,C,DA, ...