Standard Pack = 1 piece(s). Diameter = 3 IN ; Shank Diameter = 1/4 IN ; Type = End Brush ; Material = Stainless Steel Wire ; RPM = 15000 ; Wire Size = .010SV ; Diameter = 3 IN ; Shank Diameter = 1/4 IN ; Type = End Brush ; Material = Stainless Steel Wire ; RPM = 15000 ; Wire Size = .010SV ;