The ProSand A259PS medium grit sandpaper offers outstanding performance for sanding super alloys, metals, woods, and fiberglass composites. Crafted with a heat-treated abrasive and a fiber-reinforced backing, it provides durability and flexibility while maintaining excellent grain retention. The open coat, non-pigmented, water-based stearate coating reduces loading and prevents color transfer. Suitable for moderate material removal and finishing, it excels with both sanding blocks and hand-sanding.