High grade Cerium Oxide Glass Polish is used to repair and polish optics and glass surfaces. This high grade optical polishing material can be used to remove minor glass scratches on all glass surfaces. This Cerium has been tested and approved for performance particular size and efficiency. Average particle size is 1 micron. Works great with felt and synetics polishing pads. Simply mix with water to form a paste and apply to the surface of the glass. Can be applied by hand or with rotary polishing tool.Our best materials for faster polishing of imperfection in glass surfaces.