There are a few special knives out in the world that can do some serious damage. From cutting up an apple to killing a huge prey like a shark, these blades will make sure you’re ready for anything! One type of this kind of knife is a wasp injection knife.
In 2008 a group of knife designers decided to try something out of the box, and they ended up creating a Wasp injection knife, also known as the world’s deadliest knife. This peculiar design has been used in ballistics knives too and utilizes compressed gas to inflict maximum damage to the target.
The Wasp injection knife is a knife designed to inject high-pressure CO2 gas into the wound of a stabbed target. The high pressure is contained in a cartridge inside the handle of the knife. After the blade penetrates the body, the compressed air is pushed instantly at the press of a button. The compressed air expands and bursts the wound resulting in more damage.
According to the manufacturer, the effects of the wasp knife work on both dry land and water. In addition, the injection freezes organs and tissues near the area of injection as the compresses CO2 gas is at a subzero temperature.
The blade of a wasp CO2 Knife is made of 440C stainless steel. This gives the knife excellent sharpness and great corrosion resistance hence can be used in corrosive environments like the deep sea.
How does a wasp injection knife work?
This knife injects compressed gas the size of a basketball at 800PSI instantly. If this compressed gas is injected into a target underwater, it results in overinflation which can result in bursts of the target’s organs like lungs.
Who uses the wasp injection knife?
A single shot of this knife is said to drop dead the largest and deadliest creatures on land and in the sea. Also, it is easy to use, reload, and kills silently. In addition, even though you can only attack the enemy once, you are assured that there is no chance of the enemy coming back to attack you.
With that said, the Wasp injection knife is best suited for divers, hunters, outdoorsmen, and the military and tactical defence forces.
Downsides of the Wasp Injection knife
It is a close-range weapon.
To use the wasp knife, you must be close to your enemy. Imagine having to come close to a bear or a lion that is stronger than you and can kill you in a single blow.
For such dangerous animals, a distant weapon like a spear is more practical and effective. Therefore, it is not practical for hunters and outdoor people to use the knife against deadly beasts.
However, this weapon is effective for divers because, on some occasions, a shark can come close. In that desperate and defenseless moment, the wasp knife gives the divers the ability to defend themselves. With this weapon, divers get into the deep oceans with the peace of mind that they can defeat the deadly sharks in a single shot.
Costly
The wasp knife is a specialized product and comes at a high cost. A standard model cost around $500 while the larger model retails at about $600. Note that the prices might differ depending on where you purchase yours.
- MONOLITHIC CONSTRUCTION - The Drop Forged Wasp features a one-piece 52100 high carbon steel construction for the blade, guard, and tang, ensuring exceptional strength and durability; This design eliminates weak points and ensures long-lasting durability
- EXCEPTIONAL PERFORMANCE - The knife's blade is perfectly balanced with a sturdy yet needle-sharp point, and a wasp-waisted design for cutting efficiency both on the thrust and retraction; The knife's performance meets and exceeds rigorous standards
- HANDLE SCALES - While the main body of the knife is a single piece, the handle scales are add-ons that can be quickly and easily replaced if they ever wear out or break, which is highly unlikely; It adds to the knife's longevity and user convenience
- SECURE-EX SHEATH - The Wasp comes with a Secure-Ex sheath, providing safe and convenient carry options; The sheath protects the knife and the user, and makes it easy to carry the knife all day, ensuring it lasts a lifetime with proper maintenance
- SPECIFICATIONS - Weight: 8.4 oz (238.1 g); Blade Thickness: 7 mm; Blade Length: 6.75"; Blade/Handle Steel: 52100 High Carbon; Handle Length: 5.5"; Overall Length: 12.25"; Knife Type: Fixed; Blade Shape: Spear Point; Additional Features: Secure-Ex Sheath
- Looks and feels as close as possible to our Drop Forged Wasp
- Made entirely of Griv-Ex and other strategic non-metal materials
- Offers amazing piercing power and will glide through soft targets like they were made of butter
- Equipped with our "grip and rip" serrations for excellent cutting power
- Blade length: 7 inches; Handle length: 5.5 inches; Weight: 3.8 ounces
- TRI-EDGED SPIRAL BLADE: 5 3/4” cast stainless steel with a twisted, triple-edge design for cutting power.
- PRECISION PENETRATION: Razor-sharp spiral tip designed for deep, clean piercing.
- ERGONOMIC HANDLE: Glass-fiber-reinforced nylon for a slip-resistant, secure grip.
- GLASS BREAKER POMMEL: Stainless steel pommel adds functional versatility.
- CUSTOM VORTEC SHEATH: Durable belt sheath provides secure, accessible carry.
Wasp Injection Knife Cartridges
How many shots out of 1 CO2 cartridge do you get in a wasp knife?
What CO2 cartridge is recommended for wasp knife?
- Multipurpose Knife Set: This kitchen knives set includes 8" Chef Knife, 8" Slicing Knife, 7" Santoku Knife, 8" Serrated Bread Knife, 5" Utility Knife, 3.5" Paring Knife, Kitchen Shears and 6 pcs Blade Guards
- Anti-rust coating: The healthy anti-rust coating protects the knife from oxidation and dishwasher safe, while the non-stick coating ensures the blades stay clean all day long
- Easy to carry: Each knife comes with a blade guard for safe, compact storage in your kitchen cupboard. These knives are also easy to carry when camping or storing in your RV
- Perfect Holiday Gift: Ideal for kitchen enthusiasts or new cooks, this knife set meets all cooking needs. It makes an excellent holiday gift for family, friends, lover and colleague
- Lifetime Warranty: Every knife set is backed by rigorous quality inspection, we provide a lifetime warranty for every customer, ensuring superior customer service and peace of mind with every purchase
- PERFECT ALL-IN-ONE SET - Brewin kitchen knife set includes 1 x 8” chef knife, 1 x 8” slicing knife, 1 x 8” bread knife, 1 x 5” utility knife, 1 x 5” Santoku knife, 1 x kitchen scissors, 1 x universal knife block. Germain 1.4116 stainless steel. Aesthetic design. Brewin knife set meets all your kitchen works.
- NON-STICK & ERGONOMIC - The black coating on the blade ensures excellent non-stick and rust-resistant properties for our kitchen knives. Our ergonomic knife handle features anti-slip indented dots to ensure a firm and safe grip.
- DISHWASHER SAFE - Our aesthetic knife block is made of high density polypropylene, with drainage holes at the bottom. Both knives and block are dishwasher safe.
- RAZOR SHARP - The super sharp edge is engineered at 56+ Rockwell hardness score and hand polished at 14-16 degrees per side to minimize cutting resistance. High quality German 1.4116 steel offers a superior balance between long-lasting sharpness and durability.
- PERFECT GIFT & MONEY-BACK GUARANTEE - Brewin knife set is the best gift choice for your loved ones. Enjoy peace of mind with our 100% satisfaction or Money-back Guarantee.
- Full Japanese Knife Mastery – Cover every task with five iconic blades: Gyuto, Kiritsuke, Santoku, Nakiri, and Petty. From slicing sashimi to chopping veggies, this Damascus knife set ensures professional-level precision for any recipe.
- 110-Layer Damascus Steel Power – Forged with AUS-10 and VG-10 steel, each blade combines razor-sharp cutting, edge retention, and striking Damascus patterns, making this chef’s knife set both functional and eye-catching.
- Hand-Forged Strength & Balance – Featuring full-tang construction and ergonomic maple–resin handles, these Japanese knives deliver durability, comfort, and balance for chefs, collectors, and cooking enthusiasts.
- Luxury Presentation & Gift-Ready – Each knife arrives in its own premium storage box, making this Damascus set perfect for weddings, housewarmings, or as a high-quality chef gift set for culinary professionals.
- Exceptional Value & Professional Quality – Save more when buying the complete set versus individual knives, while enjoying artisan-level performance designed for daily use in both home and professional kitchens.
Sources
Wasp injection knife fixed 5.25″ Bead blast blade, black … Available at Knifecenter
https://www.knifecenter.com/item/WIWASPKA/wasp-injection-knife-fixed-bead-blast-blade-black-neoprene-handle
