DMT diamond stones are the industry leader as they use monocrystalline diamonds which last longer than the cheaper polycrystalline diamonds. The double sided stones are a great deal as they’re more economical than two single sided stones. The 6″ size is a very handy size.
The Fine/Coarse is our most popular choice but we also carry the Coarse/Extra Coarse and the Fine/ExtraCoarse.
If you have a lot of rebeveling to do or removing chips from an edge, use Coarse/Extra Coarse.
If you have general sharpening needs, the Fine/Coarse is an excellent choice for everything from kitchen knives to axes to lawn mower blades to hunting knives.