3 1/2" overall. 3" honing surface. 30 and 60 micron (fine and coarse), unique double-sided version. Stainless composite construction. Bendable and formable specially designed for gut openers. Ball chain lanyard. Honing area is coated with millions of highest quality diamonds. Can be used for honing of knives, scissors, shearing knives, garden tools, chisels, axes, fishhooks, broad heads, carbide tools, stone, glass, and ceramic.