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Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack

Diamond Machining Technology (DMT) Dia-Sharp Diamond Sharpening Stone Credit Card, Extra Fine, Fine & Coarse, 3 Pack

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?

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

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?

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?

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.

Product ID: 6003235

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Details

Material
Diamond
Brand
DMT (Diamond
Color
Blue Clear Red
Product Dimensions
3.25"L x 2"W x
Item Weight
0.32 Ounces
Grit Type
Coarse Fine

⚡Fast sharpening with monocrystalline diamond

💎3 grit levels for precision sharpening

🪶Ultra-lightweight & pocket-sized

Description

💼 Sharpen your edge, sharpen your hustle.

PRECISION EDGE MASTERY - Three color-coded diamond stones (45, 25, 9 micron) for coarse restoration, fine honing, and extra-fine polishing.
COLOR CODED CONVENIENCE - Vinyl carry cases keep each grit stone organized and ready for instant access—never lose your edge.
POCKET READY PORTABILITY - Slim 3.25" x 2" x 0.05" design fits effortlessly in your wallet or pocket—sharpen anywhere, anytime.
BUILT TO LAST MADE IN USA - Durable construction trusted by professionals for consistent, long-term performance and reliability.
EFFORTLESS SPEED CLEAN USE - Micronized monocrystalline diamond surface sharpens faster than traditional stones with no oils needed—use dry or wet.

The DMT Dia-Sharp 3-pack diamond sharpening stones deliver professional-grade edge restoration with three precision grit levels (coarse 45 micron, fine 25 micron, extra-fine 9 micron) in a sleek, credit card-sized design. Made in the USA, these ultra-portable, color-coded stones use fast, monocrystalline diamond surfaces that require no oil, enabling quick, mess-free sharpening anywhere. Ideal for managers and professionals who demand peak performance from their tools on the go.

Specifications

Material	Diamond
Brand	DMT (Diamond Machining Technology)
Color	Blue, Clear, Red
Product Dimensions	3.25"L x 2"W x 0.05"H
Item Weight	0.32 Ounces
Grit Type	Coarse,Extra-fine,Fine
Number of Items	3
Manufacturer	DMT
Global Trade Identification Number	00017042007546
UPC	735090243289 017042007546 798167684781
Part Number	D3EFC
Item Weight	0.32 ounces
Item model number	D3EFC
Is Discontinued By Manufacturer	No
Size	Small
Power Source	hand_powered
Item Package Quantity	1
Number Of Pieces	1
Grit Rating	21
Included Components	DMT D3EFC 3-inch Dia-Sharp Sharpener, Credit Card Sized- Extra-Fine, Fine and Coarse Diamond -Set of 3
Batteries Included?	No
Batteries Required?	No
Warranty Description	Manufacturer Warranty

Have a Question? See What Others Asked

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?

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

Is there any abrasive on the card edges?

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?

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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