Starline. Convex. Flap discs built-up of rectangular abrasive cloth flaps, overlapping each other and bonded on a reinforced fibre backing. The flaps are made of Norzon/alox abrasive on a heavy-duty backing, which gives a good life and good removal. Recommended as an all round quality for grinding iron, steel and stainless steel in low power machines. The convex form is ideal for both fine grinding with the full area and for grinding with a high peripheral working pressure. Max. peripheral speed 80 m/s.