The 64008 is a 5-pack of 3M 051111-51164 flap wheels measuring 4-1/2"x1/8"x5/8-11, with a 36-grit. Manufactured by BOHLER WELDING GROUP, these flap wheels offer reliable and efficient material removal and finishing. With their high-quality composition and durable construction, they ensure consistent and precise results, making them ideal for various metalworking applications.