Designed for efficiency and durability, the 4-1/2" x 7/8" GR120 ALLSTEEL™ Flap Discs from Walter Surface Technologies are an essential tool for any metalworking professional. Manufactured in Germany, these discs excel in blending sharp corners and heavy deburring, making them ideal for tasks involving fillet welds. Featuring a unique zirconia alumina grain blend, they self-sharpen with less pressure, ensuring a high removal rate on steel while maintaining longevity through a trimmable backing. Packaged conveniently in sets of ten, these flap discs are the economical choice for achieving a smooth finish in your projects.