grinding wheel,high rigidity, strong flexibility, low price, can be used widely SpeciesCode No.colorfeaturesselectionbrown fused aluminaATanhigh rigidity, strong flexibility, low price, can be used widelysuitable for normal steel grinding, grinding, rough grinding, higher anti-pulls Intensity metal grinding as well, i.e.White aluminum oxideWAWhitelower rigidity weaker flexibility than A.Suitable ...