Crafted by Walter Surface Technologies, the ALLSTEEL™ Flap Discs are designed for optimal performance on stainless steel and steel surfaces. These 4-1/2" discs feature a special zirconia alumina grain blend that self-sharpens under less pressure, ensuring a high removal rate while maintaining efficiency. With a trimmable backing that extends the life of the disc, these flap discs are the economical choice for tasks such as blending sharp corners, heavy deburring, and finishing fillet welds. Each package contains ten discs, making it a practical addition to any workshop or industrial setting.