Take good care of your knife and it will keep even longer. A diamond sharpener is small and easy to bring along, and your knife will be resharpened in no time. The Diamond Sharpener S is a fine (600 grit, best for general purpose sharpening) pen type diamond sharpening rod with a D-shaped cross section containing a groove for fishing hooks. It is a long lasting, very durable tool that is the obvious choice for keeping your woodcarving knives in good shape. Simple to use, as the steel easily follows the angle of the edge. Made in Sweden.