Based on this product's specifications, here are some alternatives and similar models
Flap Sanding Disc Rockforce RF-FD640Q 150x22.2 mm P40
Summary description:
Flap sanding disc Rockforce RF-FD640Q, size 150 x 22.2 mm, abrasive grit P40. Designed for material removal, surface shaping and edge blending on metal, wood and painted surfaces. The lamellar construction provides progressive cutting action and even wear. Suited for angle grinders with 22.2 mm arbor for coarse grinding and stock removal tasks.