Ambrogio Sanelli - The evolution of Cutting by Naniwa (Japan Company)  
 
The double-sided whetstone is ideal for sharpening knives, scissors, and tools.
The 220-grit side is perfect for grinding and restoring the edge of the blade, while the 1000-grit side is used for sharpening.
The stone comes in a plastic case that also functions as a non-slip base during use.
 
Product Info
 
Double Sided Sharpening Stone 18.5X6.5X 3H