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.

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.

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.

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.

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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

Product ID: 6003235

Details

Brand
DMT (Diamond
Color
Blue Clear Red
Grit Type
Coarse Fine
Item Weight
9.07 g
Manufacturer
DMT
Material
Micronized

⚡Sharpen edges faster than conventional stones

👜Credit card size fits any pocket or wallet

💎Micronized monocrystalline diamond surface

€ 51.89

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💼 Sharpen Like a Pro, Anywhere You Go!

NO MESS SHARPENING - Sharpen dry or with water—ditch the oils and enjoy a clean, fast, and efficient edge refinement experience.
TRIPLE GRIT MASTERY - Coarse (45 micron), Fine (25 micron), and Extra-Fine (9 micron) stones cover every edge need from restoration to razor-sharp polish.
POCKET READY PRECISION - Ultra-compact 3.25" x 2" design slips effortlessly into your wallet or pocket—always be ready to sharpen on the go.
COLOR CODED CONVENIENCE - Each stone housed in a vibrant vinyl case for quick grit identification and hassle-free organization.
DURABILITY MEETS PERFORMANCE - Crafted in the USA with premium micronized diamond tech for years of consistent, professional-grade sharpening power.

The DMT Dia-Sharp 3-pack diamond sharpening stones deliver professional-grade edge restoration and refinement in a sleek, credit card-sized kit. Featuring coarse, fine, and extra-fine micronized monocrystalline diamond surfaces, these portable stones sharpen faster and cleaner without oils. Made in the USA, their durable construction ensures years of reliable performance, perfect for chefs, woodworkers, and professionals who demand precision on the move.

Specifications

ASIN	B00006IIO3
Best Sellers Rank	#59,185 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #78 in Sharpening Stones
Brand Name	DMT (Diamond Machining Technology)
Color	Blue, Clear, Red
Customer Reviews	4.6 4.6 out of 5 stars (1,227)
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	9.07 g
Manufacturer	DMT
Manufacturer Part Number	D3EFC
Manufacturer Warranty Description	Manufacturer Warranty
Material Type	Micronized Monocrystalline Diamond
Model Number	D3EFC
Number of Items	3
Number of Packs	3
UPC	735090243289 017042007546 798167684781
Unit Count	1 Count

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