Perfectly prepare, blend, clean and detail your metal projects with the Bear-Tex Rapid Prep AO medium grit non-woven hook & loop disc. The disc works with stainless steels; tool steels; welds; aluminum; fiberglass; composites; carbon steels; super alloys; titanium; and cast, gray and ductile iron. With a long life, the aluminum oxide abrasive grain coating gives better performance and a 20 percent higher cut rate than comparable competitors. Clean Bond resin technology means smear-free finishes, while the nylon scrim backing gives the disc superior durability and stiffness.