Sand super alloys, metals, woods and fiberglass composites with the ProSand A259PS medium grit paper sheet and enjoy an excellent cut rate and longlasting durability The sheet is crafted with a heattreated abrasive affixed to a fiberreinforced backing that maintains flexibility while ensuring excellent grain retention An open coat, nonpigmented, waterbased 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