SKU: 4736540724

Naniwa Professional P-304 #400 Grit Japanese Whetstone

Sale price$44.10 Regular price$49.00
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

Naniwa Professional P-304 #400 Grit Japanese WhetstoneHighlights Naniwa Professional P 304 #400 Grit Japanese Whetstone Economical alternative to the popular Naniwa Chosera range Available in 8 different grits for versatile sharpening Upgrade from the Naniwa Super Stone series Require light soaking for 7 12 minutes before use Description The Naniwa Professional P 304 #400 Grit Japanese Whetstone is a part of the Professional series, offering an economical option for sharpening stones compared to the

Highlights
  • Naniwa Professional P-304 #400 Grit Japanese Whetstone
  • Economical alternative to the popular Naniwa Chosera range
  • Available in 8 different grits for versatile sharpening
  • Upgrade from the Naniwa Super Stone series
  • Require light soaking for 7-12 minutes before use
Description

The Naniwa Professional P-304 #400 Grit Japanese Whetstone is a part of the Professional series, offering an economical option for sharpening stones compared to the popular Naniwa Chosera range. These stones are available in 8 different grits, providing a wide range of options for various sharpening needs.

The Professional series is an upgrade from the Naniwa Super Stone series, offering improved performance and durability. The P-304 stone requires light soaking for approximately 7-12 minutes before sharpening. It is important to avoid extended soaking time as it can degrade the stone's quality.

Details
  • Level of Abrasion: Coarse Grit (#400)
Specifications
Model Naniwa Professional P-304
Grit #400 (Coarse)
Material Magnesium Resin with White Aluminium Oxide
Whetstone Size 210 x 70 x 20mm
Weight 820g
Base Loose stone / No base
Soaking Type Splash & Go
Stone Type Professional Sharpening Stone / Whetstone
Origin Made in Japan
Product Inclusions
  • 1x Naniwa Professional P-304 #400 Grit Japanese Whetstone
Maintenance

The Naniwa Professional series of stones may develop a dish after frequent usage. To maintain the stones and keep the surface flat for a longer lifespan, we recommend using a lapping plate. You can consider options such as the Jende Industries Glass Lapping Plate, Atoma Diamonds Plates, or the Shapton NAORU cast iron lapping system for this purpose.

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: 4736540724

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Ellen Mitchell
Pawtucket, US
★★★★★ 5
Fun!
Color: Black, Size: 15.7"
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Reviewed in the United States on April 29, 2026
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Shyla Badagliacca
Alexandria, US
★★★★★ 5
Very happy
Color: White, Size: 15.7", Color: White, Size: 15.7"
Easy to install, material could have been a little high quality but for the price I’m not complaining, the shelves themselves are very light weight and seem pretty durable but time will tell
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Reviewed in the United States on April 19, 2026
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Amazon Customer
Dallas, US
★★★★★ 5
Recommend these!
Color: Rustic Brown-2pack
Easy install and look pretty on my wall. Good sturdy quality.
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Reviewed in the United States on April 20, 2026
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TechDad805
Phoenix, US
★★★★★ 5
Great corner unit - love the hole for wires!
Color: White-2pack
Perfect little shelf for our room! We wanted a small little shelf in the corner that could hold a charger and that hole cut out made it perfect for our needs! I really liked the style of it and the little bar around the front. Sometimes cups or something get put on it and this stops them from falling! These shelves feel super sturdy and took me 2 minutes to install!
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Reviewed in the United States on March 18, 2026
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MSCS
Phoenix, US
★★★★★ 5
Attractive and really, a perfect size.
Color: Rustic Brown-2pack
They are a little larger than I thought, however, they will be perfect for what I need them for. There not up yet, but I know that you will really love these! I do, and hopefully will have them up soon!
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Reviewed in the United States on February 21, 2026

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