Flap discs consist of a backing pad (either fibreglass or plastic) on which flaps of high quality abrasive cloth are attached. As the flaps wear down new abrasive is exposed, ensuring a constant finish throughout the life of the disc. Flap discs are available in two designs, flat and conical. Flat for face and plain surface grinding and conical for curved and more difficult to access areas as well as face and surface grinding. They are available in different grit types, grit sizes and overall dimensions.