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

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It looks like a pen, writes like a pen, and carries like a pen. Pull the two halves apart and you have a 2.13-inch blade ready for use. The Pen Knife fits in a shirt pocket, a bag, or a desk drawer without drawing any attention — which is the point.

  • Disguised as a functional ballpoint pen — includes working ink cartridge
  • 2.13-inch blade revealed by pulling the pen apart at the center
  • 5.38-inch overall length; 0.38-inch diameter — standard pen dimensions
  • Pen cap serves as the safety mechanism when assembled
  • Available in Black, Silver, Gold, Red, and Camo

A Knife That Doesn’t Look Like One

The Pen Knife is a fully functional ballpoint pen that conceals a 2.13-inch blade inside a standard pen body. It weighs 0.06 lbs, measures 5.38 inches long, and 0.38 inches in diameter — the same dimensions as a typical office pen. Nothing about it signals “knife” until you separate the two halves.

The included ink cartridge means it functions as an actual writing instrument, not just a prop. Carry it in a pocket, leave it on a desk, or keep it in a bag alongside other pens. It won’t stand out.

Who This Pen Knife Is For

This knife suits people who want a small blade available without the visual presence of a traditional folding knife. Office workers, travelers, and anyone navigating environments where a visible knife would draw attention or concern may find the pen format more practical for daily carry.

It also works as a utility blade for tasks that don’t require a larger tool — opening packages, cutting cord, basic prep work — while maintaining the appearance of everyday office equipment.

This is not a heavy-use cutting tool. The 2.13-inch blade is compact and the pen-body design isn’t built for tasks that require a full grip. Users who need a longer blade or a knife they can use repeatedly under hard conditions should look at a standard folding knife instead.

Is This the Right Choice for You?

Choose the Pen Knife if you want:

  • A blade that travels with you in pen form without drawing attention
  • A compact everyday carry tool that doubles as a functional writing pen
  • Low-profile carry in office, travel, or social environments

Consider something else if you need:

  • A longer or heavier blade for demanding cutting tasks
  • A knife with a secure locking mechanism for hard use
  • A dedicated self-defense tool — a stun gun or pepper spray offers more reliable stopping capability at range

How It Works

The Pen Knife assembles into a standard pen form with the cap covering the tip. The blade is hidden inside the body, secured when the two halves are joined. To access the blade, pull the pen apart at the center seam — the two halves separate, exposing the 2.13-inch blade on one end. The pen cap functions as a passive safety: when it’s capped and assembled, nothing about the exterior suggests a cutting edge is inside.

The ink cartridge is functional and replaceable, which keeps the pen usable as an actual writing instrument over time. Five color options — Black, Silver, Gold, Red, and Camo — let you match the pen to your carry style or keep it blending into a standard pen holder.

Quick Comparison: How Does the Pen Knife Stack Up?

Feature Pen Knife Standard Folding Knife Pepper Spray Personal Alarm
Concealability Excellent ✓ Moderate Moderate High
Blade Length 2.13 in 2.5–4 in ✓ N/A N/A
Range Contact Contact 6–18 ft ✓ Alarm only
Utility Use Yes ✓ Yes ✓ No No
Dual Function Pen + blade ✓ Knife only Defense only Alarm only
Best For Low-profile daily carry General cutting tasks Standoff defense Drawing attention

Practical Details

Overall length: 5.38 inches. Blade length: 2.13 inches. Diameter: 0.38 inches. Weight: 0.06 lbs. Includes a functional ink cartridge. Safety: pen cap assembly. Available in Black, Silver, Gold, Red, and Camo. Check your local and state laws regarding concealed blade carry before purchasing — regulations on disguised knives vary by jurisdiction.

The Pen Knife does one thing well: it keeps a blade within reach without advertising its presence. If that’s what you need, this delivers it in a package that fits in any pocket.

Frequently Asked Questions

Does the pen actually write?

Yes. The Pen Knife includes a functional ink cartridge and writes like a standard ballpoint pen. This isn’t a non-functional prop — it’s a working pen with a concealed blade. The cartridge is replaceable when it runs out, so the pen remains usable over time without any special maintenance.

Is the blade locked in place when open?

The blade is exposed when the pen is separated into its two halves, but the design is not a traditional locking folder. The blade is fixed relative to the pen half it’s attached to when the two pieces are apart. This makes it suitable for light utility tasks but not ideal for applications requiring a secure, locked-open knife with a full handle grip. For demanding cutting work, a dedicated folding knife with a lock mechanism is a better choice.

Is it legal to carry a pen knife?

Laws on disguised or concealed blades vary significantly by state and city. Some jurisdictions treat disguised knives — blades hidden inside everyday objects — differently from standard folding knives, and may restrict or prohibit carry even where folding knives are allowed. Always check your state and local statutes before carrying any blade, particularly one designed to be unrecognizable as a knife.

What colors are available?

The Pen Knife is available in five colors: Black, Silver, Gold, Red, and Camo. All colors share the same dimensions, blade length, and functionality. The color options let you choose between a standard professional appearance (Black, Silver, Gold) or something more distinctive (Red, Camo).

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

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