SKU: 7313032671

Naniwa Professional P-390 10000 grit Japanese Waterstone

Sale price$142.16 Regular price$157.95
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

Naniwa Professional P-390 10000 grit Japanese WaterstoneThe 10000 is desinged for katana sharpening, and a great straight razor stone. If you chase the sharpest edge, the 10000 grit is the choice. The Professional The Naniwa Professional line is basically the overseas version of the Chosera line. The abrasive is basically the same as the famed Chosera line which is trusted by many professional chefs, woodworkers and sharpeners as the best splash and go sharpening stones. Compared to the Chosera (25mm

The 10000 is desinged for katana sharpening, and a great straight razor stone. If you chase the sharpest edge, the 10000 grit is the choice. 

The Professional

The Naniwa Professional line is basically the overseas version of the Chosera line. The abrasive is basically the same as the famed Chosera line which is trusted by many professional chefs, woodworkers and sharpeners as the best splash and go sharpening stones. 

Compared to the Chosera (25mm thick), the Professional (20mm) is marginally thinner, and does not come with base, which is preferred by many as easier to store and carry around. It is also cheaper to ship thanks to the lack of base. 

  • Type: Splash & Go, do not soke for more than 15 minutes
  • Dimension: 210 x 70 x 20mm (8.2 x 2.7 x 0.7")
  • Weight: 800g (28.2oz)
  • Abrasive: white aluminium (WA) oxide   

Care

Like many products designed for the high-end user, the Naniwa Chosera stones require more care than your average stone. Unlike some waterstones, these are not to be left in water, leaving them in water will affect the bonding. When you are done, just let them air dry. Don’t try to speed up the drying process by exposing them to heat, just let them air dry so they can dry evenly. Store the stones only after they are completely dry. If this extra care is too much for you, we suggest you choose a different type of stone.

 


 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7313032671

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Bamaphan
New York, US
★★★★★ 5
Good shoes!!!!!
Size: 10, Color: Tan Full Grain
They are comfortable, they fit, great style. I bought blue, brown and black shoes.
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Reviewed in the United States on August 18, 2025
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Shawn
Draper, US
★★★★★ 5
Great Product
Size: 13, Color: Black Full Grain
2nd Johnston & Murphy comfortable and stylish.
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Reviewed in the United States on December 26, 2025
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Margaret
Battle Creek, US
★★★★★ 5
Great shoes for business casual, corporate travel
Size: 8.5, Color: White Full Grain
Fit true to size
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Reviewed in the United States on December 30, 2025
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Jocko
West Palm Beach, US
★★★★★ 5
Very Comfortable Shoes
Size: 11, Color: Black Full Grain
Were purchased as a gift and the wearer says they are the most comfortable shoes he has
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Reviewed in the United States on December 28, 2025
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DALIA ALVAREZ
Boise, US
★★★★★ 5
Great shoes
I like these shoes they are comfortable, and look great. Good quality, it fits to its size.
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Reviewed in the United States on May 19, 2025

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