Standard Pack = 1 piece(s). Arbor Hole = 1/2-5/8 IN ; Diameter = 6 IN ; Face Width = 1/2 IN ; Material = Knot Type Steel Wire ; RPM = 9000 ; Trim Length = 1-1/2 IN ; Type = Straight Wheel ; Width = 9/16 IN ; Wire Size = 0.014 IN ;