Pen Knife Disguised Folding Blade Pen – 2.13-Inch Blade, 5.38-Inch Overall, Ink Cartridge Included, Available in Black, Silver, Gold, Red, and Camo

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Looks exactly like a ballpoint pen — because it actually is one. Pull it apart and there's a 2.13-inch blade inside. It's a simple, low-profile carry option that doesn't look like a knife until you need it to. Comes with a real ink cartridge, so it works as a pen too. Available in Black, Silver, Gold, Red, and Camo.

  • 2.13-inch blade concealed inside a functioning ballpoint pen — 5.38 inches overall when assembled
  • Disguised design — looks like an ordinary pen, carried like one, no one gives it a second look
  • Pen cap safety — blade stays concealed until you pull the pen apart, no accidental deployment
  • Ink cartridge included — works as an actual writing pen, not just a prop
  • Five color options — Black, Silver, Gold, Red, and Camo to suit your preference

A Pen That Happens to Have a Blade in It

It’s not complicated. This is a pen with a 2.13-inch blade hidden inside. Pull the two halves apart and you’ve got a short fixed blade. Push it back together and it’s a pen again. The pen cap keeps everything in place while it’s in your pocket or on your desk. It writes fine — there’s an actual ink cartridge in there.

The whole thing is 5.38 inches long and weighs next to nothing at 0.06 lbs. It goes places other knives don’t get a second look.

Who This Pen Knife Is For

People who want a low-profile backup blade that doesn’t announce itself. Office workers, travelers, or anyone who prefers their everyday carry to look like everyday carry. If you clip a standard folding knife to your pocket, some people notice. Nobody notices a pen.

It’s also useful for people who want something on a desk or in a bag that’s accessible but unremarkable. It’s not a hunting knife or a heavy-duty utility blade — it’s a discreet, lightweight option for someone who just wants something within reach that doesn’t draw attention.

It’s worth being straightforward: this is a small blade, not a large one. At 2.13 inches, it’s in the same territory as a box cutter or a small pocketknife. It’s useful for the situations where that’s enough.

Is This the Right Choice for You?

Choose this pen knife if you want:

  • A discreet, low-profile blade that looks like an ordinary pen
  • Something lightweight — 0.06 lbs — that disappears into a pocket or bag
  • A functioning pen you can actually write with day-to-day
  • A compact fixed blade for light utility or backup carry

Consider something else if you need:

  • A longer or heavier-duty blade for serious utility work or outdoor use
  • A locking folding knife with more grip and control

How It Works

The pen knife comes assembled and looks indistinguishable from a standard ballpoint pen. The pen cap serves as the safety — it keeps the two halves together and prevents the blade from being exposed accidentally. To access the blade, you remove the cap and pull the two halves of the pen apart. The blade is fixed when separated, not folding.

When you’re done, push the halves back together and replace the cap. It’s back to being a pen. The ink cartridge is a real one — you can use it to write, sign things, whatever. It won’t last forever as a daily writer, but it works well enough that it doesn’t feel like a prop.

Five color options: Black, Silver, Gold, Red, and Camo. At 5.38 inches long and 0.38 inches wide, it fits comfortably in a shirt pocket, a pants pocket, or a bag pocket without any bulk.

Quick Comparison: How Does the Pen Knife Stack Up?

Feature Pen Knife Standard Folding Knife Pepper Spray Personal Alarm
Concealment Excellent ✓ Moderate Moderate Moderate
Blade Length 2.13 inches 2.5-4 inches ✓ N/A N/A
Weight 0.06 lbs ✓ 0.2-0.5 lbs 0.1-0.5 lbs Under 0.1 lbs ✓
No-Look Carry Yes ✓ Visible clip Visible canister Visible device
Legal Profile Low Varies by blade length Varies by state No restrictions ✓
Best For Discreet backup carry Utility and everyday tasks ✓ Ranged deterrent Noise-based deterrent

Practical Details

Overall length: 5.38 inches. Blade length: 2.13 inches. Width: 0.38 inches. Weight: 0.06 lbs. Type: Disguised fixed blade. Safety: Pen cap. Includes working ink cartridge. Available in Black, Silver, Gold, Red, and Camo. Check local laws regarding concealed blade carry before purchasing — knife regulations vary by state and municipality.

If you want a blade that goes everywhere without being noticed, the pen knife is about as low-profile as it gets — and it actually writes too.

Frequently Asked Questions

Does it actually work as a pen?

Yes — there’s a real ink cartridge inside and it writes like a standard ballpoint pen. It’s not going to replace your everyday pen for heavy writing use, but it works fine for signatures, notes, and general writing tasks. The ink cartridge is included and functional right out of the box. Replacement cartridges are standard ballpoint size if you ever need one.

How is the blade accessed? Is there a locking mechanism?

The blade is accessed by removing the pen cap and pulling the two halves of the pen apart. The blade is a short fixed blade when separated — it doesn’t fold or lock in the traditional sense. The pen cap keeps the halves together during carry. It’s a simple, no-moving-parts design. Reassembly is just pushing the halves back together and replacing the cap.

Is this legal to carry?

Knife laws vary significantly by state, city, and sometimes even by venue. Most jurisdictions regulate blade length, concealed carry, and intent. At 2.13 inches, this blade is shorter than the limit in most places, but the disguised nature of the design can be a factor in how local laws apply. It’s worth checking your state and local ordinances before carrying it. We don’t provide legal advice — that’s a conversation for your local laws or an attorney if you’re unsure.

How do the color options differ — is it just cosmetic?

Yes, the color options are purely cosmetic. All five versions — Black, Silver, Gold, Red, and Camo — have the same dimensions, blade length, and functionality. It’s just a matter of which one fits your preference or blends better into your everyday carry setup. Black and Silver tend to look most like standard office pens. Camo is more of a novelty but works the same way.

Type of KnifeDisguised
Overall Length5.38 inches
Blade Length2.13 inches
SafetyPen Cap
IncludedInk Cartridge

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