Get smear-free finishes even on high-nickel alloys with the Clean Bond resin technology of this Bear-Tex Vortex Rapid Prep AO coarse grit non-woven hook & loop disc. To enhance the disc's durability, longevity and stiffness, the high-loft nylon fiber and strong nylon scrim are strongly bonded to thick resin and grain. With patented, high-performance Vortex agglomerated grain, this aluminum oxide disc delivers coarse grit power to super alloys, hard tool steels, carbon steels, soft metals, fiberglass, and composites, all while offering a fine grit finish.