SUEHIRO NEW CERAX Ceramic Dual Whetstone Sharpening Stone #3000/1000 Grit - Professional Knife Sharpener for Kitchen, Hunting & Chef Knives - Perfect for Home, Restaurant & Outdoor Use

Manufacturer: Suehiro
Type: Combination 

Stone Size: 183×63×13 / 183×63×15mm  (7.2×2.5×0.5 / 7.2×2.5×0.6'') 

Medium: #1000 (blue)
Finish: #3000 (yellow)
Material: Ceramic 

               Stand / Synthetic rubber
               Storing Case /  Special styrene

Made in Japan
For Commercial use
 (Of course usable for home use)

How to sharpen

1,Put the water in case and soak in water for 10 minutes before sharpening.

2, just sharpen with the water which appears when you sharpen without washing it away.
3, How to sharpen
(Double bevel)
 sharpen one side 10-15 times, then the other side 10-15 times. with the same angle, with the same power. The angle is 7 degrees.
(Single bevel)
At first sharpen front side 10-15 times.
Next sharpen back side while pulling knife a few times for removing the burr.