Diamond cup grinding wheels, single row Item:SINGLE ROW For General PurposeDry&Wet grinding concrete,graite,marble,stone,etc.Diameter Arbor Hole Segment ThicknessxWidthxSegment QTYMetric(mm)InchesMetric(mm)Inch(inch)Metric(mm)1054”22.235/8”-11UNF5mmx8mmx71154.5”22.235/8”-11UNF5mmx8mmx81255”22.235/8”-11UNF5mmX8mmx91506”22.235/8”-11UNF5mmx8mmx101807”22.235/8”-11UNF5mmx8mmx12