... Tool Builders' Association. Details Material Code No.ColorfeatureWhite aluminum oxideWAWhiteEasy to cut into the workpiece, it can reduce ... the workpiece and have a good cutting techologyBrown aluminum oxideAGreyGreat toughness,high hardness,flesural strength.It can ... suchgrinding wheel made by brown aluminum oxide with vitrified bonded. grinding wheel,Brown Aluminum Oxide Grinding Wheel,It is ...