What grit is this stone?

As a disclaimer, I do proclaim this to be absolute. What I understood was that the stone, as it is ceramic is measured in microns. This stone I saw advertised as 3 micron which converts to 8,000 grit. I have included a link to share with you the conversion table. https://www.gessweincanada.com/category-s/11328.htm

How does this stone compare to Black Arkansas stone ?

I suspect it is as fine or finer than a hard Arkansas stone. I love mine. I still use a leather strop for the final honing which is probably overkill based on how fine the spider stone is.

Will this stone work on my Japanese knives at 62 rockwell?

I use this for my straight razor

So, I see some say it isn't perfectly flat and they use different methods coarse DMT, etc. to flatten it, so won't that "rough" it up too much?

I had the same concern as you so did not use a dmt diamond to grind the ceramic flat. The many tiny hills and valleys on the ceramic surface are very apparent after sharpening a knife because the tops of the hills get dirty but the valleys do not. But even without being perfectly flat the ceramic works well. It would be nice to do a side by side test to see if flattening the ceramic gives a sharper edge or not.

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Ultra Fine Benchstone Sharpening Stone - 3" x 8" Ceramic Stone, Professional Grade, with Suede Carrying Case - Model 306UF, White

Product ID: 7202587

Details

Material
Ceramic
Brand
Spyderco
Color
Multicoloured
Product Dimensions
2"L x 1"W x
Item Weight
1.1 Pounds
Grit Type
Fine Grit

👜Includes suede carrying & grip sleeve

🪨3" x 8" large ceramic surface

⚙️Ultra-fine high-alumina ceramic grit

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195045CFA

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Description

🪓 Sharpen like a pro, anywhere, anytime—because dull edges are so last season.

EFFORTLESS DRY USE - No oils or lubricants needed—sharpen clean and fast, anytime, anywhere.
PORTABLE PRO GRADE KIT - Suede sleeve doubles as a grip and travel case—sharpen on the go like a boss.
PROUDLY MADE IN THE USA - Crafted with quality and reliability that professionals trust.
PRECISION SHARPENING MASTERY - Ultra-fine ceramic delivers razor-edge accuracy for all your blades.
GENEROUS SHARPENING REAL ESTATE - Extra-wide 3" x 8" surface handles everything from knives to skis with ease.

The Spyderco Ultra Fine Benchstone is a professional-grade 3" x 8" high-alumina ceramic sharpening stone designed for ultra-precise edge refinement. It requires no oils or water, simplifying maintenance and use. The included suede carrying sleeve enhances portability and grip, making it ideal for sharpening knives, woodworking tools, and even ski edges. Made in the USA, it guarantees top-tier quality for both amateurs and pros.

Specifications

Material	Ceramic
Brand	Spyderco
Color	Multicoloured
Product Dimensions	2"L x 1"W x 5"H
Item Weight	1.1 Pounds
Grit Type	Fine Grit,Ultra
Number of Items	1
Manufacturer	Spyderco
Global Trade Identification Number	00716104640447
UPC	716104640447 000000120609
Item Package Dimensions L x W x H	11.65 x 5.75 x 0.51 inches
Package Weight	0.57 Kilograms
Item Dimensions LxWxH	12 x 5 x 0.5 inches
Brand Name	Spyderco
Warranty Description	SEE MANUFACTURER
Model Name	306UF
Suggested Users	unisex-adult
Part Number	306UF
Model Year	2015
Included Components	STONE AND SLEEVE
Size	3 X 8 -Inch
Sport Type	Hunting

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Excellent communication throughout the order process. Product is perfect.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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195045CFA

Duties & taxes included

In stock

Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Cote D' Ivoire.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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