Wood Artistry's Microfinishing Film 5 Pack (40 Micron) has a very high grit consistency to provide an evenly abraded surface. It can be used in the middle grades of abrasives used on the Lap-Sharp Sharpening System, without causing lumping of amalgam. Microfinishing films have a thin film backing that provides a flat abrasive surface that may be used wet or dry. They are fast cutting and an excellent choice for sharpening knives, carving tools, and turning tools. Includes 5 sheets of 40 micron film.