-- Use diamond as abrasive material, more efficient than normal whetstone and less risk of damaging the edges.
-- Unique honeycomb design, making sure the resulting powder will not bulge and will not influence sharpening knife.
-- It is only 1mm thick, taking little room, and can be fixed on any flat surface, very convenient to use.
-- Mini size designed, it is easy to take for camping, or used as kitchen, garden and woodwork sharpening tool.