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💎 Sharpen smarter, not harder — edge perfection anywhere, anytime!
The DMT 4-inch Extra-Coarse Diamond Whetstone delivers professional-grade sharpening with a fast-cutting 60 micron diamond surface. Its compact, portable design allows for convenient use in tight spaces or on the go, while the durable synthetic construction guarantees long-lasting performance. Sharpen dry or with water—no oils required—making it a clean, efficient tool favored by chefs and craftsmen alike.
| ASIN | B00004WFV0 |
| Best Sellers Rank | 84,721 in DIY & Tools ( See Top 100 in DIY & Tools ) 64 in Sharpening Stones |
| Brand | DMT |
| Brand Name | DMT |
| Colour | Black |
| Country Of Origin | USA |
| Customer Reviews | 4.8 out of 5 stars 116 Reviews |
| Global Trade Identification Number | 00017042004439 |
| Grit Type | Extra Coarse |
| Grit type | Extra Coarse |
| Included Components | Diamond Whetstone |
| Item Dimensions L x W x H | 22.2L x 8.3W x 5.7H centimetres |
| Item Type Name | Knife Sharpener |
| Item Weight | 0.06 Pounds |
| Item weight | 0.06 Pounds |
| Manufacturer | DMT |
| Manufacturer Part Number | A4X |
| Material | Synthetic |
| Material Type | Synthetic |
| Model Number | A4X |
| Number of Items | 1 |
| Product dimensions | 22.2L x 8.3W x 5.7H centimetres |
| UPC | 017042004439 |
| Unit Count | 1.0 count |
A**R
Small it so useful
I use it as an essential part of my sharpening equipment for my woodturning chisels.
D**Y
Not the advertised/named length
This is sold as a 4 inch whetstone. It's actual length is 4.4", worth noting if you need to mount this in anything that requires a specific length. Otherwise this is very good.
J**S
Excellent quality sharpener
I bought this coarse stone along with some of the other DMT stones awhile ago and have become a huge fan. This particular stone is very effective at repairing an edge, but what I'm most impressed with is the quality. The construction of the stone is solid and tolerances are excellent. This truly will be a lifetime tool for me - which is an important consideration when I buy tools. It's a great example of a quality product made in the USA.
P**O
Grob genug
ich habe als Vorarbeit den silbernen Schleifstein um arge Scharten im Messer auszuwetzen. danach den hier um die Furchen zu bereinigen OHNE Druck arbeiten, das Teil nimmt es einem sonst übel Die Groben Teile nehmen auch so viel Material ab danach mit welchen auch immer fertig machen (ich hab die weiteren DMT Diamanten rot,grün, blau und fleischfarben)
J**N
Good
Works well and fits, only use this grit to repair knife edge from heavy damage tho
D**O
otimo
perfeito!, ja uso a mais de dez anos as pedras da DMT vale o investimento
A**.
Steel-eating monster.
I bought this to re-bevel blades with my DMT Aligner. I was worried that I should have ordered the XX coarse instead, but I now know that it isn't needed. Maybe if you're trying to grind away something really hard like D2 or ZDP-189 you'll need it, but I don't have anything above 58 or 60 HRC. This things chews through 1095 carbon, 12C27 Sandvik and 8CR13MoV like butter, and has no trouble at all with S30V and VG10. I can put a new bevel on any of my knives in a few minutes with minimal effort.
Trustpilot
2 weeks ago
3 weeks ago