... ,,GC Grit NO.:46#,60#,80#,100#,120#,180#,220# wheel diameter:3.2--50mm .A is suitable for steel and ... and PA are suitable for stainless steel and alloy steel.Wheel diameter:3.2-50mmHandle diameter:2.35mm,3mm,3.17mm ... ,chamfering,precious stones ,jade processing abrasive polishing. Grinding stone /grinding wheel