Sand super alloys， metals， woods and fiberglass composites with the ProSand A259PS medium grit paper sheet and enjoy an excellent cut rate and long-lasting durability. The sheet is crafted with a heat-treated abrasive affixed to a fiber-reinforced backing that maintains flexibility while ensuring excellent grain retention. An open coat， non-pigmented， water-based stearate coating prevents color transfer and produces minimal loading. An ideal product for moderate material removal and finishing， this versatile sandpaper delivers great results with a sanding block or board or when used for hand-sanding projects.