3M supply a range of Flap Discs that are ideal for use on a variety of materials. They are made from layers of abrasive cloth consisting of abrasive material. The abrasive cloth is angled on a supporting plate and last up to 10 times longer than conventional fibre discs. For use on wood, metal, painted surfaces and masonry. The advantage of flap discs is that as the material wears away it exposes a new, fresh face of abrasive therefore achieving much higher material removal. Flap discs are particularly effective for rust removal and general finishing applications.