Naniwa Chosera Professional Whetstone set

The Naniwa Chosera series, crafted exclusively for the Japanese market, offers premium sharpening performance. Featuring a thicker design than the PRO line, this whetstone includes a Nagura flattening stone for enhanced sharpening efficiency, with base attached. Built for professional-grade use.

This a complete set need to achieve great results in sharpening/ 

Recommend progression: 400 grit --> 1000 grit --> 5000 grit
optional 10,000 grit 

Care Instructions
Use the included Nagura (included) before/after use.
Only a short soak in water in needed. Do not leave in water for extended periods.
Flatten, clean and allow to air dry in a cool place. Allow to completely dry before storing.

Nagura stone: The Nagura Stone is used to help maintain flatness of the surface.
The Nagura also helps to make a slurry prior to sharpening, which speeds up the sharpening process.

Leigh’s 2 cents:
My recommended progression discounted!
Massive, high-quality whetstones! Made to sharpen many knives.
The base is attached and does NOT fit into a stone holder (nor do you need one).
Get the sink bridge to match and/or a Atoma flattening plate.
Optional 10,000 grit if you really want to spoil yourself :-) 

Dimensions:
Brand: Naniwa ナニワ研磨工業
Origin: Japan
Length: 210mm
Height: 25mm
Width: 70mm
Overall Length: 250mm
Overall Width: 78mm
Weight: 1350g