For those looking to achieve exceptional results in metalworking, the Maxidiscâ„¢ EXV Zirconia High Density flap disc is an indispensable tool. Designed specifically for ferrous metals, including iron, steel, and stainless steel, this 4.5" disc features a 60 grit for effective grinding, blending, and finishing tasks. With a robust construction using high-density zirconia, it excels in medium to heavy stock removal, weld bead removal, and paint stripping, ensuring a smooth and polished surface. Each box contains 10 discs, making it a cost-effective choice for both professionals and DIY enthusiasts. The disc operates at a maximum RPM of 13,300, allowing for efficient performance in various applications, from deburring to base preparation for steel frame structures.