Standard pack = 1 piece(s). Type = Miniature Cup ; Arbor/Shank Size = 1/8 Inch ; Brush Diameter = 1 Inch ; Fill Material = Stiff Hair ; Maximum Speed = 25000 rpm ; Shank Diameter = 1/8 Inch ; Trim Length = 7/16 Inch ; Type = Miniature Stem Mounted ; Wire Material = Stiff Hair ; Wire Type = Stiff Hair ;