Merit Abrasives Surface Prep TR Non-Woven Quick-Change Discs Quality aluminum oxide abrasive grain coating provides higher rate and better performance than competitive products. Proprietary Clean Bond resin technology guarantees smear-free finishes even on high nickel content alloys and reduces loading on aluminum and other soft metals. Premium high-loft nylon fiber bonded to a strong nylon scrim backing allows a thick layer of resin bond and grain for extended life, added durability and stiffness. Coarse grit for moderate material removal and initial blending of welds including stainless, soft metals like aluminum, carbon steels, and titanium. Pack of 25