Standard Pack = 1 piece(s). Backing Material = Fibre ; Backing Weight = Screen ; Color = Black ; Converted Form = Disc, Plain Back ; Diameter(Inch) = 8 ; Diameter (Metric) = 203.2 ; Form Type = Screen ; Grade = P500 ; Harmonizing Code = 6805100000 ; Mineral Type = Aluminum Oxide ; Product Form = Disc ; 3M Stock Number = 7000045611 ;