--- product_id: 604857639 title: "NA-0040 New Arata Professional Medium Whetstone #400 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm) Green" brand: "naniwa" price: "₩247102" currency: KRW in_stock: true reviews_count: 5 category: "Naniwa" url: https://www.desertcart.kr/products/604857639-na-0040-new-arata-professional-medium-whetstone-400-8-3 store_origin: KR region: South Korea --- # Compact 8.3 x 2.8 x 0.6 inch size for easy handling Grit #400 for precise medium sharpening Corundum material for tough steel blades NA-0040 New Arata Professional Medium Whetstone #400 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm) Green **Brand:** naniwa **Price:** ₩247102 **Availability:** ✅ In Stock ## Summary > ⚡ Sharpen Like a Pro, Slice Like a Boss! ## Quick Answers - **What is this?** NA-0040 New Arata Professional Medium Whetstone #400 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm) Green by naniwa - **How much does it cost?** ₩247102 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/604857639-na-0040-new-arata-professional-medium-whetstone-400-8-3) ## Best For - naniwa enthusiasts ## Why This Product - Trusted naniwa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Portable Design:** Sized perfectly for professional use and easy storage, fitting seamlessly into your sharpening setup. - • **Precision Medium Grit #400:** Ideal for restoring edge sharpness on kitchen knives and precision tools without over-grinding. - • **Versatile Sharpening Power:** Perfect for knives, scissors, chisels, and even hammers—your all-in-one blade revitalizer. - • **Premium Corundum Composition:** Engineered to tackle hardened steel blades faster than conventional stones, ensuring long-lasting sharpness. - • **Authentic Japanese Craftsmanship:** Experience artisan-quality sharpening that delivers a velvety smooth edge and excellent tactile feedback. ## Overview The Naniwa NA-0040 New Arata Professional Medium Whetstone (#400 grit) is a high-quality Japanese sharpening stone made from durable corundum. Measuring 8.3 x 2.8 x 0.6 inches, it’s designed for medium grit sharpening of kitchen knives, scissors, chisels, and other precision blades. Praised for its fine-grained texture and excellent edge feedback, it efficiently sharpens even hardened steel blades, making it a must-have tool for professionals and enthusiasts seeking superior blade performance. ## Description Japanese grindstone that is made with high quality artisans. Even with hardened steel materials that were difficult to sharpen with conventional artificial whetstones can be used to make blades faster. Includes a storage case for both a sharpening table. Review: Very nice stone, quite fine-grained - Very nice sharpening stone. One of the best I’ve used. I mostly use Shapton Pro (1k and 5k). Compared to those, I would say that this is more fine-grained than the grit would suggest, maybe more like a 3k. This is not a fast sharpening stone, so you’ll need something courser to start on a dull knife, but this stone has good feed-back and leaves a very nice edge. I’m fairly decent with sharpening stones, but also pretty lazy so I tend to use no more than 2 stones on a given knife. For western knives, this is too fine-grained for me to bother. My Japanese knives tend to be kept pretty sharp, so I can usually start on this, and sometimes go to a 5k afterwards, but going from this stone to a leather strop can leave an extremely good edge. The plastic case is extremely flimsy and broke in shipping. Not a big deal but they are handy to have and wish the case was a bit better. Review: Vale cada centavo - Pedra sensacional, muito gostosa de usar, proporciona um excelente feedback, aveludada, sua ação na remoção de material é rápida e fácil manutenção, não retém muitas partículas na superfície da pedra. ## Features - Grit size: #400 - Size: Length 8.3 x Width 2.8 x Thickness 0.6 inches (210 x 70 - Uses: For grinding kitchen knives, knives, scissors, stainless steel blades, hammers, chisels, chisels, and other precision cutlery ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01M29WI7N | | Brand | Naniwa | | Colour | Green | | Country of Origin | USA | | Customer Reviews | 4.5 out of 5 stars 149 Reviews | | Enclosure Material | Corundum | | Grit Type | Coarse | | Included Components | No | | Item Dimensions L x W x H | 24L x 8.1W x 3.3H Centimeters | | Item Type Name | Whetstone | | Item Weight | 717 g | | Manufacturer | ナニワ研磨工業 | | Manufacturer Part Number | NA-0040 | | Material | Corundum | | Model number | NA-0040 | | Number of Items | 1 | | Product Dimensions | 24L x 8.1W x 3.3H Centimeters | | Unit Count | 1.0 Count | ## Product Details - **Brand:** ナニワ研磨工業 - **Colour:** Green - **Grit Type:** Coarse - **Item Weight:** 1.58 Pounds - **Manufacturer:** ナニワ研磨工業 - **Material:** Stone - **Number of Items:** 1 - **Product Dimensions:** 24L x 8.1W x 3.3H Centimeters ## Images ![NA-0040 New Arata Professional Medium Whetstone #400 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm) Green - Image 1](https://m.media-amazon.com/images/I/61SNb8ZlSnL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very nice stone, quite fine-grained *by T***D on 23 August 2025* Very nice sharpening stone. One of the best I’ve used. I mostly use Shapton Pro (1k and 5k). Compared to those, I would say that this is more fine-grained than the grit would suggest, maybe more like a 3k. This is not a fast sharpening stone, so you’ll need something courser to start on a dull knife, but this stone has good feed-back and leaves a very nice edge. I’m fairly decent with sharpening stones, but also pretty lazy so I tend to use no more than 2 stones on a given knife. For western knives, this is too fine-grained for me to bother. My Japanese knives tend to be kept pretty sharp, so I can usually start on this, and sometimes go to a 5k afterwards, but going from this stone to a leather strop can leave an extremely good edge. The plastic case is extremely flimsy and broke in shipping. Not a big deal but they are handy to have and wish the case was a bit better. ### ⭐⭐⭐⭐⭐ Vale cada centavo *by C***O on 1 August 2025* Pedra sensacional, muito gostosa de usar, proporciona um excelente feedback, aveludada, sua ação na remoção de material é rápida e fácil manutenção, não retém muitas partículas na superfície da pedra. ### ⭐⭐⭐ Broken case *by J***L on 17 July 2023* The plastic case to protect the stone was broken and there’s a small chip in the stone but all in all it is good as what you expected from the brand! Thank you ## Frequently Bought Together - Naniwa NA-0040 New Arata Professional Rough Whetstone #400 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm) - Naniwa NA-0300 Goken New Professional Finishing Whetstone #3000, 8.3 x 2.8 x 0.6 inches (210 x 70 x 15 mm) - Naniwa Straightening Stone IO-1142 Grit 220 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/604857639-na-0040-new-arata-professional-medium-whetstone-400-8-3](https://www.desertcart.kr/products/604857639-na-0040-new-arata-professional-medium-whetstone-400-8-3) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-15*