This Micro Fine Chromium Oxide polishing compound is specially designed to be used with strops to put a scary sharp, polished, mirror-edge on knives, carving chisels and woodworking tools. It can be used on leather, wood or synthetic strops. Rather than removing metal, stropping with chromium oxide compound, polishes and refines the cutting edge. The waxy consistency allows it to adhere well to any substrate without powering. Simply rub the bar evenly on the surface like a crayon. A little goes a very long way, so this small bar will last for a very long time. After applying compound to a strop, polish your knives and blades to a mirror, razor sharp finish. To achieve the best possible edge, finish honing by polishing your edge on raw leather. This compound is micro fine with a 0.5 micron particle size and will produce an edge equivalent to 60,000 grit. Chromium Oxide (Cr2O3) is a superfine, polycrystalline abrasive, it is the mineral that gives green polishing compound it’s color. 100% made in the USA from 100% pure chromium oxide. Bar weights in at 1.2 ounces and is 3/4 inches x 3/4 inches x 2-3/8 inches.