Wallet Carry / 4-in-1 EDC Diamond Field Sharpening System
Sharpen anything, anywhere. The Wallet Carry 4-in-1 EDC Diamond Field Sharpening System packs professional-grade sharpening power into a kit small enough to fit in your wallet or survival tin. Designed for field use, this system delivers fast edge restoration, precision stropping, and full training support for anyone who takes edge maintenance seriously.
Developed by survival instructor David of Ultimate Survival Tips, this portable sharpener was engineered after years of field testing and design refinement to create the smallest practical diamond sharpening system on the market—built to work, not to impress.
"A prudent person foresees danger ahead and takes precautions. The simpleton goes blindly on and suffers the consequences. - Proverbs 27:12"
Dual-Grit Diamond Plate
500 grit side restores dull or damaged edges; 1000 grit side refines and polishes.
Mini Leather Strop + Compound
Finish your edge to razor sharp in the field or at camp.
Grip Pad
Keeps the sharpener stable on slick surfaces for safer use.
Pocket-Sized Portability
Fits in your wallet, glove box, or Altoids tin.
Complete Instruction Package
Includes sharpening and stropping guide plus a free online sharpening course.
The numbers, flat and honest.
| Dual-Grit | 500 grit (fine) / 1000 grit (extra fine) diamond plate |
|---|---|
| Size | Credit-card dimensions – fits in Altoids tin or wallet |
| Includes | Dual-sided sharpener, strop, grip pad, compound, sharpening guide, access to training course |
| Weight | Ultra-light, pocket-sized field system |
| Use | Knives, hatchets, axes, chisels, and small tools |
| (1) PLUS a Free Sharpening Video Course Including | Lesson 1: How to Break in Your Sharpener Lesson 2: How to Sharpen Your Knife Lesson 3: How to Strop Your Knife Razor Sharp Lesson 4: How to Sharpen a Hatchet / Axe or Tomahawk |
| Grit | 500 (fine) / 1000 (extra fine) |
| Dimensions | Approx. 3.3" x 2" (credit-card size) |
| Materials | Industrial diamond stone, leather strop, non-slip pad, polishing compound |
WHY YOU’RE BUYING FROM STAY READY.
We aren’t the Amazon of survival. We’re a small, opinionated shop that carries gear we’d stake our own lives on — and we back every piece with real support.
Curated
Every brand we carry has been vetted in the field by our team. If it doesn’t pass our 30-day use test, we don’t stock it.
Authenticated
Factory-direct from authorized dealers. No grey-market, no refurb, no knockoffs. Your warranty is real.
Supported
Real humans on phone, text, and email — seven days a week. We carry this gear ourselves and we stand behind it.
American
HQ in California. Orders ship from our US warehouse. US-based customer care.
SURVIVAL & OUTDOOR TOOLS
Survival gear with roots going back to 1936. Fire starters, signal mirrors, and the kit that should already be in your bag.
UST — short for Ultimate Survival Technologies — has been manufacturing survival and disaster preparedness equipment since 1936. The lineup covers LED lights, patented all-weather fire starters, unbreakable signal mirrors, premium cutting tools, first aid kits, signal whistles, full survival kits, and camp kitchen gear. UST Brands operates three product lines: UST itself, UST Marine, and Blue Sky Gear. Based out of Jacksonville, Florida.
- Founded in 1936
- Based in Jacksonville, Florida
- Three product lines: UST, UST Marine, Blue Sky Gear
- Patented all-weather fire starters and unbreakable signal mirrors
- Full survival kits, signal whistles, and camp tools
Answers, straight up.
Product-specific questions on the left. Shopping with SRO on the right. Both open-ended — hit us if we missed one.
What can I sharpen with it?
Knives, axes, tomahawks, chisels, fishing hooks, and other small edged tools.
Is it durable enough for daily carry?
Yes. The diamond plate and strop are designed for repeated field use and resist corrosion and wear.
How do I learn to use it?
Every kit includes written instructions and a link to the online “Knife Sharpening Bootcamp” video series.
How long does shipping take?
Most orders process within 1–3 business days from our warehouse. From there: 5–7 business days economy, 2–3 business days expedited, or overnight if you need it fast. Free economy shipping on orders over $150 (contiguous US). Alaska, Hawaii, and Pro Eagle / freight items are quoted at checkout. You’ll get a tracking number and link the moment your order ships.
What’s your return policy?
30 days from the day your order arrives. Gear has to come back unused, with all original tags, stickers, and packaging intact. For standard items we’ll send a prepaid return label and deduct return shipping from your refund. Oversized or freight returns are on you, unless the item showed up damaged, defective, or wrong — in which case we cover it.
Refunds hit your original payment method within 10 business days of approval.
What can’t I return?
Final-sale items, gift cards, food and drink products, personal-care items, anything customized or engraved, briefs (hygiene), and hazardous materials. If you’re not sure whether something qualifies, email us before you order — we’ll tell you straight.
Do you ship outside the contiguous US?
Yes. Alaska, Hawaii, and US territories ship on freight-quoted rates calculated after checkout. International orders are available worldwide at variable rates; duties and import fees are the customer’s responsibility. EU customers get a 14-day cancellation window per EU consumer law, on top of our standard return policy.
My package arrived damaged — what now?
Email info@stayreadyoutdoors.com within 7 days of delivery with your order number and clear photos of the damage (product + packaging). We’ll replace, refund, or ship a return label on us — no back-and-forth. Damaged, defective, or wrong-item claims never cost you shipping.
Can I talk to a human before buying?
Yes. Email info@stayreadyoutdoors.com — we answer every message ourselves, usually within a few hours during business days. We carry this gear, we use this gear, and we’d rather talk you out of a kit that doesn’t fit your mission than sell you the wrong one.
Do you offer a military/first-responder discount?
Yes. Active-duty and veteran military, police, fire, EMS, and medical first responders get 10% off every order. Verify through GovX at checkout — one-time, secure, and reusable across thousands of brands. Discount applies automatically once you’re verified.