--- product_id: 6003235 title: "Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack" brand: "dmt (diamond machining technology)" price: "HK$349" currency: HKD in_stock: true reviews_count: 13 category: "Dmt (Diamond Machining Technology)" url: https://www.desertcart.hk/products/6003235-diamond-machining-technology-dmt-dia-sharp-diamond-sharpening-stone-credit store_origin: HK region: Hong Kong --- # Color-coded grit for easy ID Credit card-sized, pocket-ready Micronized monocrystalline diamond surface Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack **Brand:** dmt (diamond machining technology) **Price:** HK$349 **Availability:** βœ… In Stock ## Summary > πŸ’Ό Sharpen like a pro, anywhere you go β€” your edge, your power. ## Quick Answers - **What is this?** Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack by dmt (diamond machining technology) - **How much does it cost?** HK$349 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/6003235-diamond-machining-technology-dmt-dia-sharp-diamond-sharpening-stone-credit) ## Best For - dmt (diamond machining technology) enthusiasts ## Why This Product - Trusted dmt (diamond machining technology) brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Razor-Sharp Honing:** Fine 25 micron stone perfects your cutting edge - β€’ **Mess-Free Sharpening:** Sharpen dry or with waterβ€”no oils, no hassle - β€’ **Ultimate Portability:** Slim 3.25" x 2" stones fit effortlessly in your wallet or pocket - β€’ **Mirror-Polished Finish:** Extra-fine 9 micron stone polishes to perfection - β€’ **Precision Edge Restoration:** Coarse 45 micron stone revives dull blades fast ## Overview The DMT Dia-Sharp 3-pack features credit card-sized diamond sharpening stones in coarse, fine, and extra-fine grits (45, 25, and 9 microns) with a durable monocrystalline diamond surface. Designed for professionals and enthusiasts alike, this portable kit fits in your wallet and sharpens quickly without oils, delivering consistent, precision edges anytime, anywhere. ## Description Product Description Designed to fit easily into any pocket or wallet, each honing stone comes in a color-coded carry case. 3-piece sharpening system includes a coarse diamond stone (45 micron / 325 mesh) for restoring neglected edges, a fine diamond stone (25 micron / 600 mesh) for honing razor-sharp edges, and an extra-fine diamond stone (9 micron / 1200 mesh) for polishing and refining after sharpening with a coarser diamond. Each diamond plate measures 3.25" x 2" x 0.05". From the Manufacturer Take your sharpening anywhere with the ready-to-go Dia-Sharp credit card sized diamond sharpener. Each one fits easily in pocket or wallet. Each comes in convenient vinyl color-coded carry case. Kit of 3: Coarse diamond (45 micron / 325 mesh) to quickly restore a neglected edge; Fine diamond (25 micron / 600 mesh) for a razor sharp edge; and Extra-Fine (9 micron / 1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond. Each: 3 1/4-inch x 2-inch x .05-inch Sharpening with diamonds is fast and easy. No messy oils needed--sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT products. Made in USA. ## Features - Diamond Wet Stone Sharpening Kit: Designed to fit easily into any pocket or wallet, each lightweight diamond stone also comes in a convenient, grit color-coded vinyl carry case - 3 Diamonds: Coarse diamond stone (45 micron / 325 mesh) restores neglected edges; Fine diamond stone (25 micron / 600 mesh) hones edges; Extra-fine diamond stone (9 micron / 1200 mesh) polishes and refines edges - Portable: Each diamond stone sharpener is conveniently sized at 3.25 x 2 x 0.05 inches, meaning you can take your sharpening anywhere - Fast & Easy: Micronized monocrystalline diamond surface sharpens edges faster and easier than conventional sharpening stones; No messy oils are needed either -- sharpen lapping plate dry or with water - Made In The USA: Preferred by professionals for their superior quality and versatility, our durable diamond sharpening stones are built to provide years of consistent performance and reliable service - Pocket-sized convenience - 3 different diamond stones--extra-fine to polish and refine an edge, fine for a razor sharp edge, and coarse to transform a dull edge - Sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface - No oil is needed-sharpen dry or with water - Durable construction will provide years of consistent performance and reliable service ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00006IIO3 | | Best Sellers Rank | #28,840 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #44 in Sharpening Stones | | Brand | DMT (Diamond Machining Technology) | | Brand Name | DMT (Diamond Machining Technology) | | Color | Blue, Clear, Red | | Customer Reviews | 4.6 out of 5 stars 1,210 Reviews | | Global Trade Identification Number | 00017042007546 | | Grit Type | Coarse,Extra-fine,Fine | | Included Components | DMT D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3 | | Item Dimensions L x W x H | 3.25"L x 2"W x 0.05"H | | Item Type Name | DMT D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3 | | Item Weight | 0.32 Ounces | | Manufacturer | DMT | | Manufacturer Part Number | D3EFC | | Manufacturer Warranty Description | Manufacturer Warranty | | Material | Micronized Monocrystalline Diamond | | Material Type | Micronized Monocrystalline Diamond | | Model Number | D3EFC | | Number of Items | 3 | | Product Dimensions | 3.25"L x 2"W x 0.05"H | | UPC | 735090243289 017042007546 798167684781 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** DMT (Diamond Machining Technology) - **Color:** Blue, Clear, Red - **Global Trade Identification Number:** 00017042007546 - **Grit Type:** Coarse,Extra-fine,Fine - **Item Weight:** 0.32 Ounces - **Manufacturer:** DMT - **Material:** Micronized Monocrystalline Diamond - **Number of Items:** 3 - **Product Dimensions:** 3.25"L x 2"W x 0.05"H - **UPC:** 735090243289 017042007546 798167684781 ## Images ![Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack - Image 1](https://m.media-amazon.com/images/I/81QJfBru5wL.jpg) ![Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack - Image 2](https://m.media-amazon.com/images/I/81zLGNhKTcL.jpg) ![Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack - Image 3](https://m.media-amazon.com/images/I/A1cSP5tJvGL.jpg) ![Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack - Image 4](https://m.media-amazon.com/images/I/914nxwK9hBL.jpg) ![Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack - Image 5](https://m.media-amazon.com/images/I/91LME9F7+BL.jpg) ## Questions & Answers **Q: How brittle are these? I want to put one in my edc pouch that rides around in my cargo pocket. Will they snap easily if bumped or flexed?** A: I don't think there is any danger of snapping the Dia-Sharp card by accident (or on purpose, for that matter). The substrate appears to be steel, about 1.5x the thickness of a credit card, with the finishing surface diamond-impregnated. **Q: Has anybody tried cutting these in half....to potentially double your usage time?.otherwise, i find the middle doesnt get used, just the edges. ThankS** A: Never have tried to cut them in half. Haven't experienced your problem with wear either. love these little stones. They do wear out though. **Q: Is there any abrasive on the card edges?** A: Just had a look at mine--nope, no abrasive on the edge--the cards are really thin, so I don't there really could be, anyway. **Q: Can the cards be modified in any way? Like cutting down to size or drilling holes through them to attach to a lanyard or camping bag?** A: They are just metal cards with an adhesive matrix that diamond chips are embedded into. You can cut or drill them as you want, but be careful so as to not knock the diamond chips loose from the card. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by K***7 on September 28, 2014* ### ⭐⭐⭐⭐⭐ Review *by K***R on January 15, 2022* ### ⭐⭐⭐⭐ Review *by T***L on November 28, 2015* ## Frequently Bought Together - Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack - Trend Diamond Abrasive Lapping Fluid, 3.4 fl oz, Blue, Professional Grade Sharpening Fluid for Optimum Performance, DWS/LF/100 - DMT (Diamond Machining Technology) 2.5-in. DiaSharp Diamond Mini-Hone Sharpening Kit of Coarse, Fine, and Extra Fine Grit Sharpeners (D2K) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hk/products/6003235-diamond-machining-technology-dmt-dia-sharp-diamond-sharpening-stone-credit](https://www.desertcart.hk/products/6003235-diamond-machining-technology-dmt-dia-sharp-diamond-sharpening-stone-credit) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-05-05*