The conical shape of the DMT Diafold diamond sharpener offers the crucial advantage of adapting perfectly to different serration widths. While flat sharpening stones only reach the tips of the serrations, the conical rod, with its variable diameter (from 1/4 to 1/16 inch), allows it to penetrate deep into the individual grooves of the serration and sharpen them precisely.
Furthermore, the diamond coating makes the tool exceptionally efficient, sharpening even the hardest steel or ceramic blades in no time. The compact design with folding handles protects the sharpening rod and makes it a practical companion for on the go. It can be used dry or with water, and no oil is required.