Based on this product's specifications, here are some alternatives and similar models
Sanding disc 3M Cubitron II 152 mm, pack of 50 (MPN 86825)
Summary description:
Sanding disc 3M Cubitron II, 152 mm diameter, pack of 50 (MPN 86825). Abrasive discs designed for sanding, blending and finishing on metal and other surfaces. Suitable for use with 152 mm backing pads and random orbital sanders or rotary tools that accept this size. Pack quantity ensures extended runtime for workshop or production use.