This Monocrystalline diamond surface sharpening tool can swiftly hone any edges with no oil or water. Transportable and simple to use with an ergonomic handle and pouch. Suitable for bonsai tool maintenance, woodworkers, chefs, and more. Unique colour coded system with green representing Extra Fine grade. Output of 9 microns or 1200 mesh, a 178mm overall length with a 0.85mm thick tip, and 2.5 inches of diamond surface. Easily sharpen dry or wet with no mess thanks to DMT Diamond Mini Hone, Extra Fine. Works great with Jojoba oil. Manufactured in the USA for durability and reliability.