abrasive flexible grinding discs for steel,stainless steel,stone polishing green color like 3M brand durable working life CHARACTERISTICS: made of normal grade corundum(Aluminium oxide, White aluminium oxide, or silicon carbide), Veins #, black color, 1netAPPLICATIONS: flexible grinding abrasive disc for steel, stainless steel, or for glass, marbel, brass, and aluminium ,etc.ITEM NO. ...