3/4" Miniature Crimped Steel Wire Brush mounted on 1/8" arbor Miniature Steel Wire Brush mounted on 1/8" arbor is used to clean, polish and producing special finishes on metal such as white gold silver and platinum. These crimped (.005") wire brushes are used to achieve a softer or matte finish. These have a double section of wire, 3/4" in diameter mounted on a 1/8" mandrel. Sold by the dozen