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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 | 107,347 in DIY & Tools ( See Top 100 in DIY & Tools ) 96 in Sharpening Stones |
| Brand Name | DMT |
| Colour | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (115) |
| Global Trade Identification Number | 00017042004439 |
| 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 | 27 g |
| Manufacturer | DMT |
| Manufacturer Part Number | A4X |
| Material Type | Synthetic |
| Model Number | A4X |
| Number of Items | 1 |
| UPC | 017042004439 |
| Unit Count | 1.0 count |
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