Norton Bear-Tex Vortex Rapid Prep Discs are the better choice for finishing and blending applications. Smear-free, even on high nickel content alloys.Will not load on aluminum and soft metals. Typical Applications:Removing surface defectsRemoving light edge burrs, parting lines or flashingRemoving rust, oxides, corrosion, paints and scaleCleaning moldsBlending mill marks, tool marks, uneven edges and coated abrasive finish