Double-sided Whetstone with bamboo holder


When you use our knives regularly, they might become a bit dull. With whetstones, or grindstones, you are able to preserve the sharpness of the knives and keep on enjoying easy cutting and chopping. 

Forged out of bonded aluminum and real diamonds, the whetstones consist of two sides with different grain sizes. Which means you do not have to spend money on two different whetstones. 

Higher sharpness
Achieve a higher sharpness than regular grinding bodies.

Prevents unnecessary loss
The different grain sizes prevent unnecessary loss of material during the grinding process.

Optimal performance
Weekly use of the fine grain size contributes to optimal performance of the knives.

It’s fun
Grinding your own knives is simply more fun.

Weight 858g
21cm x 9cm x 6cm
Material Bonded aluminum with diamonds 
Included Whetstone with a non-slip bamboo holder


1. Soak the stone in water for 10-15 minutes.
2. Start with grinding the knife on the coarse grain.
3. Keep the knife in an angle of 10-15 degrees and move it back and forth without using too much pressure. Repeat until you have the desired sharpness.
4. Use the fine grain side to polish the blade and achieve the best sharpness.
5. Rinse of the knife and let it dry before storing it, to maintain the quality.

Establish the grain size

Grain 200 to 600 Restoring dull blades
Grain 800 to 1000
Sharpening knives that are still in good condition
Grain 2000 to 3000 Creating a sharper blade than new knives have
Grain 3000 to 8000 Creating razor-sharp blades

Only available in this web shop!

About Shinrai Knives
Over the last decade, our team has gained thorough knowledge of kitchen knives and cookware. Our mission is to offer high quality products at a fair price. Additionally, we are focused on customer satisfaction. As we are always available for advice, questions and other remarks.

Worldwide shipping
Free shipping on orders over €50,-

Fast shipping
European delivery within 3 days.

Secure payment
Multiple payment options, all secured for your safety.


Country Standard shipping Transit time
 Netherlands Free above €49.- 1-2 working days
Germany/Belgium/Switzerland/Austria Free above €49.- 1-3 working days
Europe Free above €49.- 2-4 working days
US/Canada Free above €49.- 5-10 working days
Middle East Free above €49.- 20-30 working days*
Rest of world Free above €49.- 5-15 working days


Easy returns within 21 days. For more information please visit

Shinrai is the Japanese word for confidence, reliance and trust. A perfect summary of our main purpose; building and maintaining customer confidence, while delivering high quality knives worldwide.

High quality knives are essential in every kitchen. Our selection meets high standards and prevents annoyances such as blunt knives and food sticking to the blade. We love cooking and gladly share our joy with the rest of the world.

Our knives are partly handmade and forged out of the best materials. Variations in design ensure that there is a perfect knife for every kitchen and every chef. The only thing you have to do is place an order. We will take care of the rest. That is our promise.

Shinrai Knives

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