Credit Card Knife – 2.75-Inch Locking Blade, Wallet-Slim

My nephew Marcus works double shifts at a warehouse. He used to carry a big folding knife clipped to his pocket — the kind that made his supervisor ask questions he did not want to answer. What he needed was something that would open a box, cut a zip tie, and go home with him without becoming a whole situation. That is when I handed him the Credit Card Knife, and he has not looked back since.

Who This Knife Is For

This one is for the person who needs a dependable cutting tool and not one ounce of extra weight or drama. Warehouse workers, delivery drivers, college students, hikers who pack light, anyone who keeps a slim wallet and wants a blade that earns its place every single day. If every knife you have looked at was too thick, too heavy, or too much to explain — this is the one that removes every excuse.

Is It the Right Fit for You?

Choose It If You Want

• A blade that lives in your wallet card slot and stays there
• A cutting tool that does not draw attention in a break room or on a job site
• Something lightweight enough to forget you are carrying it — until you need it
• An affordable option to keep one on you, one in the glove box, and one in the gear bag

Consider Another Option If You Need

• A longer blade for heavy-duty outdoor or field work
• One-hand opening for situations where speed matters more than discretion
• A knife with a dedicated grip handle for extended cutting tasks

Credit Card Knife Features and Benefits

• 2.75-Inch Locking Blade: Long enough for real everyday tasks — breaking down boxes, cutting cord, opening packaging — and the blade lock holds it firmly open so it does not fold back on your fingers mid-use.
• Credit Card Dimensions: At 3.38 by 2.13 inches and just 0.13 inches thin, this knife fits flat in a wallet card slot, a front pocket, or a gear bag without printing or shifting.
• Blade Lock Safety: Keeps the blade secured in the closed position during carry. No accidental openings in your bag, no snags, no surprises.
• Disguised Profile: It looks like a card, not a knife. No belt clip, no handle bulk, no raised eyebrows from people who do not need to know your business.
• Under Half an Ounce: At 0.1 lbs, you will not feel it. It just goes where you go.
• Black Finish: Clean, low-profile, and professional enough for any setting.
• Under Five Dollars: Pick one up for yourself, tuck a spare in the glove box, and hand a few to the people you look after. At this price, that is an easy call.

How the Credit Card Knife Compares

Here is how it stacks up against two common alternatives a shopper might consider.

Care and What’s Included

What’s in the Box

You receive one Credit Card Knife in black. It arrives ready to carry — slip it into your wallet and go.

Legal Notes

This knife is legal to own and carry in most US states, but blade length limits, concealed-carry rules, and restrictions on disguised knives vary by state, city, and venue. Check your local laws before carrying. Some locations — schools, government buildings, and certain public spaces — prohibit knives regardless of size.

Credit Card Knife: Frequently Asked Questions

How big is the Credit Card Knife when folded?

Folded and closed, it measures 3.38 inches tall, 2.13 inches wide, and just 0.13 inches thin — nearly identical to a standard credit card in profile. It fits flat in a wallet card slot without stretching the leather or creating a noticeable bulge.

Does the Credit Card Knife blade lock when open?

Yes. The blade locks in the open position so it stays stable while you are working. It will not fold back unexpectedly mid-cut. When you are finished, fold it closed and the blade lock secures it for carry. That combination — open lock and closed lock — is what makes this safe to use and safe to carry.

What can I actually use it for day to day?

Opening boxes, cutting zip ties, slicing packaging tape, trimming cord, handling small tasks that come up on a job site or delivery route. The 2.75-inch blade is the right length for practical everyday cutting. This is a working tool, not a display piece, and it handles everyday tasks without asking for storage space in return.

Is the Credit Card Knife legal to carry where I live?

It is legal in most US states, but laws around blade length, concealed carry, and disguised knives differ from one jurisdiction to the next and can change. Before you carry it, take five minutes to look up the knife laws in your city and state. Some venues — schools, courthouses, transit systems — have their own rules regardless of what state law says.

Add This Knife to Your Everyday Carry

The wallet slot it fills is already there. The tasks it handles come up every day. At this price, the only real question is how many you want to keep on hand. Pick your quantity, add to cart, and know that the next time a box needs opening, you will be ready.