Sorby 1 in. x 400 Grit Micro Sandmaster Discs, 10 ct are high-quality hook and loop disc abrasives designed specifically for the Sorby Micro Sandmaster. These 1-inch discs feature a 400 grit texture, making them for detailed sanding and finishing work. Each pack contains 10 durable discs, providing excellent value and long-lasting performance. Made in England, these discs ensure consistent results for your sanding projects. Model Number: W411A400