SHAPED CERAMIC STONES by SPYDERCO use water as a lubricant for a beautiful, uniform cut and are resistant to shattering and breakage.
The stones can be easily cleaned with detergent and warm water, returning them to their original white cutting surface.
The set includes a square, triangle, and round ceramic stone, each measuring ΒΌ" (6.3mm) by 5" (15.2cm), providing a smooth cut that becomes finer with use.