Joysun surface conditioning flap discs have been optimally designed with non-woven Scotch Brite materials infused with premium quality refined aluminum oxide grains free from iron, sulfur and chlorinated fillers. The 3D structure of the discs adds to the abrasive effects and performance. Each flap disc brings an outstanding advantage, on which its spring effect and rigid structure provides constant abrasive pressure, for an enhanced effect. They are easy to use and do not require a highly trained operator to achieve the desired finishing effects. The surface conditioning flap discs are recommended for surface preparation, cleaning and finishing applications on stainless steel, titanium, high tensile steel, non-ferrous metals and aluminum alloys.