These discs are typically used for paint or coating removal and feature the quick and easy twist-to-lock attachment system. The disc is an open-web construction impregnated with silicon carbide to provide aggressive and long-lasting performance. The extremely durable, three-dimensional web has a soft edge, allowing it to remove paint and other coatings in those unreachable creases and dents while removing very little metal. Great for stripping paint without damaging metal especially on aluminum.