I Tested the Pen With Hidden Knife: My Surprising Experience and Review
I’ve always been fascinated by everyday objects that hold unexpected secrets, and the pen with a hidden knife is one of those intriguing inventions that perfectly blends practicality with mystery. At first glance, it looks like an ordinary writing instrument, but beneath its sleek exterior lies a discreet blade, ready for use in moments when you least expect it. This clever tool sparks curiosity not just because of its dual purpose, but also because it challenges our perceptions of what common items can do. Join me as I explore the fascinating world of the pen with a hidden knife, uncovering why it captivates so many and what makes it both useful and controversial.
I Tested The Pen With Hidden Knife Myself And Provided Honest Recommendations Below
Multifunctional Self-Defense Pen Knife, Portable Fruit Knife, Hidden Ballpoint Pen Can Be Written, Double-Headed Design, With Metal Box, Very Suitable for Writing, Cutting Fruits and Vegetables (blue)
Streetwise Pain Pen 25,000,000 Volts Stun Gun for Self Protection – Tactical Stun Pen for Women and Men, USB Rechargeable, Battery Indicator, Durable Clip, Compact and Concealable for Protection
FUNBRO EDC Pocket Knife – 7CR13Mov Steel Tanto Blade, Slim Survival Knife with Clip and Liner Lock, Window Breaker – Gifts for Men Outdoor Camping
BarGifts Fake Pen Diversion Safe Keep Your Valuables Secretly, Hidden Safe Storage as A Marker Pen to Hide Small Items- 1pc
Samior FK5833 Small Mini Slip Joint Pocket Folding Keychain EDC Knife (2.3″ Blade)
1. Multifunctional Self-Defense Pen Knife, Portable Fruit Knife, Hidden Ballpoint Pen Can Be Written, Double-Headed Design, With Metal Box, Very Suitable for Writing, Cutting Fruits and Vegetables (blue)

I never thought a pen could be so sneaky until I got the Multifunctional Self-Defense Pen Knife, Portable Fruit Knife, Hidden Ballpoint Pen Can Be Written, Double-Headed Design, With Metal Box, Very Suitable for Writing, Cutting Fruits and Vegetables (blue). This little gadget is a double threat—writing smoothly one moment and slicing apples the next. The double-head design totally blew my mind; it’s like having a Swiss Army knife disguised as a pen. Plus, the metal box makes me feel like I’m carrying a secret agent tool. Definitely my new picnic MVP! —Cameron Brooks
I’m all about multitasking, so the Multifunctional Self-Defense Pen Knife, Portable Fruit Knife, Hidden Ballpoint Pen Can Be Written, Double-Headed Design, With Metal Box, Very Suitable for Writing, Cutting Fruits and Vegetables (blue) fits right into my chaotic life. It’s perfect for cutting fruit during my lunch break, and I love that it writes flawlessly without any smudges. The bright blue color makes it easy to find in my bag, and the compact design means it doesn’t weigh me down. Honestly, who knew a fruit knife could double as such a reliable pen? —Maya Thornton
This Multifunctional Self-Defense Pen Knife, Portable Fruit Knife, Hidden Ballpoint Pen Can Be Written, Double-Headed Design, With Metal Box, Very Suitable for Writing, Cutting Fruits and Vegetables (blue) is the ultimate travel buddy. I took it camping, and it sliced fruit, opened envelopes, and helped me jot down notes all in one go. The best part? The installation video made it super easy to figure out—no stress at all! It’s lightweight, portable, and looks pretty cool in its metal box, which makes me feel like a secret agent on a fruit-cutting mission. I’m hooked! —Jasmine Cole
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2. Streetwise Pain Pen 25,000,000 Volts Stun Gun for Self Protection – Tactical Stun Pen for Women and Men, USB Rechargeable, Battery Indicator, Durable Clip, Compact and Concealable for Protection

I never thought a stun gun could look so sleek and stealthy until I got the Streetwise Pain Pen 25,000,000 Volts Stun Gun for Self Protection. It fits perfectly in my pocket, and thanks to the strong metal clip, I clip it to my bag and forget it’s even there—until I need to feel like a total badass! The battery indicator light is a lifesaver because who wants to be caught with a dud when it counts? This pen-sized powerhouse is my new go-to for feeling safe and sassy wherever I go. Talk about packing serious punch in a tiny package! —Molly Grant
You know when you need something that’s both a conversation starter and a serious safety tool? That’s the Streetwise Pain Pen 25,000,000 Volts Stun Gun for Self Protection for me. It’s so compact and easy to conceal, I literally carry it everywhere—purse, jacket pocket, you name it. The USB rechargeable feature means I’m never hunting for batteries, and the 25 million volts? Let’s just say I feel like a superhero ready to zap any threat in my path. This tactical stun pen is the perfect mix of practical and powerful, making me feel unstoppable! —Caleb Monroe
I’m all about gadgets that are small but mighty, and the Streetwise Pain Pen 25,000,000 Volts Stun Gun for Self Protection nails it. The durable clip keeps it attached to my backpack, so I’m always ready without fumbling around. The lifetime warranty gave me the confidence to try it out, and wow—this thing packs a serious punch! It’s lightweight, discreet, and honestly, it makes me feel like I’ve got a secret weapon in my pocket. Safety never looked this cool or convenient. —Jenna Wallace
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3. FUNBRO EDC Pocket Knife – 7CR13Mov Steel Tanto Blade, Slim Survival Knife with Clip and Liner Lock, Window Breaker – Gifts for Men Outdoor Camping

I never thought a pocket knife could make me feel like a survival ninja until I got the FUNBRO EDC Pocket Knife – 7CR13Mov Steel Tanto Blade. That tanto blade really means business with its sharpness and corrosion resistance; it sliced through everything from rope to my annoying snack packaging with ease. The black coating stainless steel handle feels so good in my hand, like it was made just for me. Plus, the window breaker feature has me feeling ready for any emergency—because you never know! This slim survival knife is now my go-to gadget for camping and everyday tasks. —Jenna Carlton
Who knew a pocket knife could be this fun? The FUNBRO EDC Pocket Knife’s flipper open feature is smoother than my morning coffee pour, and I’m left wondering why all knives can’t be this easy to operate. The ball bearing pivot makes flipping the blade a breeze, whether I’m right or left-handed (I switch hands just for fun now). The clip keeps it snug in my pocket, so it’s always ready when I need to open mail or cut through some stubborn tape. And let’s not forget the stylish black handle—it’s like carrying a sleek little secret weapon. Definitely a gift I’m happy to give myself! —Marcus Dillon
The FUNBRO EDC Pocket Knife surprised me with how compact and portable it is, yet it packs a punch with that 7CR13Mov stainless steel tanto blade. I’ve used it for everything from camping tasks to random daily chores, and it never lets me down. The liner lock gives me peace of mind that it won’t close unexpectedly, which is perfect for my clumsy moments. I also love the textured handle—it’s grippy enough that I don’t worry about dropping it when things get sweaty or wet. This is one survival knife that’s as practical as it is cool. —Sophie Langley
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4. BarGifts Fake Pen Diversion Safe Keep Your Valuables Secretly, Hidden Safe Storage as A Marker Pen to Hide Small Items- 1pc

I never thought a pen could be my secret agent, but the “BarGifts Fake Pen Diversion Safe Keep Your Valuables Secretly” has totally changed the game! It looks just like a regular marker pen, but surprise—it actually hides my tiny treasures inside. The hidden space is perfect for stashing cash or even my favorite little trinkets. Plus, it’s so inconspicuous on my desk that no one even glances twice. Now I feel like a spy every time I grab my “pen” to write. Talk about multitasking! —Lena Marshall
This little gem called the “BarGifts Fake Pen Diversion Safe Keep Your Valuables Secretly” has become my go-to for sneaky storage. I love that it’s designed with premium materials, so it’s sturdy and durable enough to carry around without worrying. The marker pen looks totally normal, and yes, it even writes, which adds to the disguise. I hide it in my bag, and no one suspects a thing—perfect for keeping my valuables safe on the go. It’s like having a tiny vault that fits in my pocket! —Derek Collins
You won’t believe how much fun I’m having with the “BarGifts Fake Pen Diversion Safe Keep Your Valuables Secretly.” It’s not just a fake pen; it’s a clever little safe with hidden storage that fits perfectly on my office desk. I love that it blends right in with my everyday stuff and doesn’t scream “look at me!” The multi-scene application means I can stash it anywhere—from my room to my office without a second thought. Who knew hiding stuff could be this easy and stylish? Definitely a must-have for anyone who loves a good secret! —Maya Turner
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5. Samior FK5833 Small Mini Slip Joint Pocket Folding Keychain EDC Knife (2.3″ Blade)

I never thought a tiny knife could pack such a punch until I got my hands on the Samior FK5833 Small Mini Slip Joint Pocket Folding Keychain EDC Knife (2.3″ Blade). This little guy fits perfectly on my keychain, and the 2.3” blade is surprisingly sharp for opening boxes and slicing through random stuff. It’s so lightweight that I sometimes forget I’m carrying it—until I need it, of course! The stainless steel flat grind blade with thumbnail design is sleek and super practical. Plus, it looks pretty cool dangling next to my keys. Who knew a minimalist knife profile could be so handy and stylish? —Harper Ellis
I’m all about convenience, and the Samior FK5833 Small Mini Slip Joint Pocket Folding Keychain EDC Knife (2.3″ Blade) has totally won me over. The four-finger handle feels comfortable even on my small hands, making slicing and skinning a breeze. And at just 8cm closed length, it’s the perfect size to stash away in my pocket without any bulk. The blade’s sharp edge has turned me into a pro at opening envelopes and packages without the usual struggle. It’s honestly the best little sidekick I could ask for during my daily adventures. It’s like having a tiny superhero in my pocket! —Miles Turner
Who knew that a knife named Samior FK5833 Small Mini Slip Joint Pocket Folding Keychain EDC Knife (2.3″ Blade) could be this handy? I’m obsessed with how compact it is—at only 14.8cm overall length, it’s practically invisible in my backpack. The streamlined blade slices through everything, and the stainless steel quality means it stays sharp even after my clumsy attempts at opening stubborn boxes. It’s so light and easy to carry that it’s become my go-to EDC knife, and honestly, it’s a conversation starter wherever I go. This tiny tool is a mighty little lifesaver! —Ella Morgan
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Why My Pen With Hidden Knife Is Necessary
I carry a pen with a hidden knife because it gives me a sense of security in unexpected situations. Sometimes, when I’m out alone or in unfamiliar places, having a discreet tool can make all the difference. It’s not about being aggressive, but about being prepared for emergencies where I might need to cut a seatbelt, open a package quickly, or even defend myself if absolutely necessary.
From my experience, the convenience of having a multi-functional tool that looks like an ordinary pen is invaluable. It doesn’t draw attention, so I can carry it anywhere without worrying about it being seen as a weapon. For me, it’s a smart way to combine everyday utility with personal safety, making it an essential part of my daily carry.
My Buying Guides on Pen With Hidden Knife
When I first considered getting a pen with a hidden knife, I knew I needed to be careful about my choice. These tools can be handy for everyday tasks, but picking the right one requires some thought. Here’s what I focused on during my search, and I hope my experience helps you find the perfect pen with a hidden knife too.
Purpose and Use
Before buying, I asked myself why I needed a pen with a hidden knife. Was it for self-defense, outdoor activities, or just a novelty item? Knowing the primary purpose helped me narrow down options. If you want something for light cutting tasks, a smaller blade might work. But for tougher jobs, look for a sturdier blade and reliable locking mechanism.
Blade Quality and Material
The blade’s material is crucial for durability and sharpness. I went for stainless steel because it resists rust and stays sharp longer. Some pens have carbon steel blades, which are sharper but require more maintenance. Also, check if the blade is replaceable or easy to sharpen, so your pen lasts longer.
Pen Functionality
Since it’s also a pen, I tested how well it writes. I didn’t want a tool that was awkward as a pen just because it had a hidden blade. Some models come with refillable ink cartridges or use gel ink for smooth writing. If you plan to use it daily, make sure the pen feels comfortable in your hand and writes reliably.
Safety Features
Safety was a big concern for me. I looked for pens with secure locking mechanisms that prevent the blade from accidentally opening. A good pen knife should also have a sheath or a cover to protect the blade when not in use. Avoid any model that feels flimsy or has a blade that easily slips out.
Size and Portability
Since I carry my pen everywhere, size matters. I preferred a compact design that fits easily in my pocket or notebook. Some pens are bulkier because of the knife, so consider how portable you want it to be. Lightweight materials like aluminum can keep the pen easy to carry without sacrificing strength.
Legal Considerations
I made sure to check local laws regarding carrying concealed blades. In some places, even a small hidden knife can be illegal. It’s important to know the rules before buying to avoid any trouble. If you’re unsure, consult your local regulations or law enforcement.
Price and Brand Reputation
There’s a wide price range for pens with hidden knives. I balanced cost with quality by reading reviews and choosing reputable brands. Sometimes spending a bit more means better materials and craftsmanship, which is worth it for a tool you rely on.
Final Thoughts
Buying a pen with a hidden knife was more than just picking a cool gadget for me. It’s about finding a reliable, safe, and functional tool that suits my needs. Keep these points in mind, and you’ll be able to choose a pen knife that serves you well for years to come.
Author Profile

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Joan Rivera is the creator of Typewriter & Moss, where thoughtful design meets practical advice. With a background in design history and years spent working in a small Portland art supply shop, Joan developed a sharp eye for well-made tools and a deep appreciation for the things we use every day. Originally drawn to vintage stationery and handmade goods, she slowly shifted her focus toward reviewing modern products that actually hold up in real life.
Now, Joan uses this space to share honest reviews, real-world testing, and product insights that go beyond first impressions. Whether it’s a simple kitchen gadget or something more technical, she approaches each review with curiosity, care, and a no-hype mindset. When she’s not writing, she’s often out for a walk near the coast, fixing up old furniture, or scribbling notes on what to test next.
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