Take on a variety of demanding surface preparation and finishing tasks with the LAUCO 3" Quick-Change Discs. This 25-disc bulk pack provides a long-lasting, high-performance supply designed for efficient, aggressive grinding, paint stripping, shaping, and finishing across a wide range of materials. Effortless Performance, Exceptional Durability These discs deliver professional-grade results thanks to their core material: Premium Zirconia Abrasive Grains. Zirconia is engineered for an aggressive cut rate and exceptional longevity, providing superior durability compared to traditional aluminum oxide discs. This ensures the disc stays sharper for longer, allowing you to power through tough materials like carbon steel, cast iron, and titanium without premature wear. A key feature for sustained performance is the Active Grinding Aid. This innovative additive works to reduce friction, preventing heat buildup and minimizing material clogging (or "loading") on the disc surface. This not only guarantees a smoother, cooler sanding experience but also significantly extends the working life of each disc, especially when used on heat-sensitive materials like stainless steel and nickel alloys. Universal Compatibility and Versatility The LAUCO discs feature a Universal Quick-Change System with a male Type R design. This allows for an effortless, roll-on/roll-off fastening system, ensuring hassle-free attachment to any standard 3-inch backing pad. The system maximizes compatibility, letting you quickly transition between tools like a standard ¼-inch power drill, air grinder, or die grinder using the appropriate backing pad adapter. These coarse-cut discs are ideal for heavy-duty, multi-surface sanding, including: Automotive: Aggressive sanding and grinding on automotive paint, primers, body fillers, and putties before final finishing or scratch removal. Metalworking: Work on aluminum, brass, bronze, copper, steel, and ferrous metals. Woodworking: Shaping and surface preparation on hardwoods and general furniture making. These LAUCO Quick-Change Discs are the perfect solution for tackling tough sanding jobs with exceptional performance, versatility, and ease of use, making them a valuable and efficient addition to any professional or DIY toolbox.