Abstract: An industrial brush comprises a brush body having a cup-shaped containing portion with a bottom wall and at least one side wall, which together define a receiving cavity, a bundle of filament or cable lengths partly housed in the cavity and externally protruding therefrom, means for retaining the bundle inside the cavity, where at least one side wall of the containing portion has a neck of a predetermined length, corresponding to at least ? of the length of the side wall and extending towards an access opening of the cavity to at least partly define the retaining means. The side wall of the containing portion also comprises a plurality of longitudinal ribs, which are substantially parallel to the central axis and angularly spaced from each other so as to define a corresponding plurality of longitudinal channels.