Constructed of compressed non-woven nylon fibers, the Finishing Abrasive Point is great for finishing work or light deburring and can be used for paint and rust removal without removing the base material. Ideal for sharpening, deburring and general purpose grinding on harder materials including stone, glass, ceramic, porcelain, gemstones and non-ferrous metals. The accessory features a 1/2 In. (12.7 mm) diameter with a ball nose shape specially designed for working with conic and flat surfaces.