FLEX 4-1/2" SIGHTMAX™ 40 Grit Flap Disc a clear view of the surface you are grinding, stripping, or shaping, enhancing precision and control. This innovative flap disc features a segmented design that provides a transparent line of sight to the work surface, reducing over-abrasion and maximizing efficiency. Its special coating minimizes heat buildup d to traditional flap discs, resulting in increased performance and a longer lifespan. Made with high-quality zirconium abrasive grain, the SIGHTMAX™ flap disc delivers quick stock removal while its iron- and sulfur- construction helps prevent rust by reducing oxidizable particles on finished surfaces. Additionally, a moisture-resistant coating extends the disc's durability. The conical 10-degree flap arrangement improves ergonomics for better tool handling and grinding comfort. Model Number: FA302001