Standard Pack = 1 piece(s). Brush Length = 1-1/8 IN ; Diameter = 1/2 IN ; Material = Stainless Steel Wire ; Overall Length = 2-3/4 IN ; RPM = 22000 ; Shank Diameter = 1/8 IN ; Trim Length = 1-1/8 IN ; Type = End Brush ; Wire Size = .0104SV ;