Use: all kinds of irregular surface polishing operations for a variety of metals, non-metals, wood. Features: emery cloth surface is divided into many small thin strips, it can at the same time automatic polishing convex surfaces and corners in various sizes, significantly reducing the hands-on work, doubling productivity. Specifications: Diameter 10 "2 may be combined thickness according to their needs," an integral multiple, but not after the composition has a gap between the two rolls. Grit designation: 40 # --1000 #