Convex flap discs offering long service life and high cutting capacity. For grinding iron, steel and stainless steel. Made of rectangular overlapping abrasive cloth flaps bonded on a reinforced fibre backing. The convex shape is ideal for both fine grinding with the full area and for grinding with a higher peripheral grinding pressure. Max. peripheral speed 80 m/s. Highest safety classification with oSa labelling. The flap discs are also compatible with regular angle grinders.