Grinding wheel /grinding stone Abrasive:A ,WA,PA,,GC Grit NO.:46#,60#,80#,100#,120#,180#,220# wheel diameter:3 ... .2--50mm .A is suitable for steel and iron..GC are suitable for aluminum,copper,cast iron and stone ... ..WA and PA are suitable for stainless steel and alloy steel.Wheel diameter:3.2 ... stones ,jade processing abrasive polishing. Grinding stone /grinding wheel