Micro-Mesh’s unique cushion design allows its abrasive crystals to recede into resilient backing and “float” to an even cutting plane. Micro-Mesh follows the contours of your work evenly and won’t gouge or create new planes or contours. Micro-Mesh is perfect for refinishing steel tools and removing light scratches. Restores rolling mill rollers to like-new condition. Grits are silicon carbide. Effective on all metals: gold, silver, platinum, even steel. Leaves a smoother, finer finish than expected. Can be used dry or wet. Dry, it will outlast common abrasives 5-7 times. Using oil or water will increase its life 7-15 times.