🔨 Elevate Your Grind Game! Enjoy a long service life with self-sharpening technology. Perfect for metal, wood, and more! Stay cool under pressure with superior heat management. Experience low noise while you work. Transform surfaces with precision and ease. 320 grit 4" diameter 5/8" aperture The NUODUN 10Pcs Nylon Fiber Flap Discs are designed for professionals seeking high efficiency in metal polishing and rust removal. With a 4-inch diameter and 320 grit, these discs fit standard 4" angle grinders, offering versatility across various materials including metal, wood, and plastic. Their self-sharpening feature ensures longevity and consistent performance, making them ideal for both intricate and heavy-duty tasks.