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Types of Knives

With all the different types of knives today, it can be easy to get lost in the seemingly endless information. Lucky for you, this knife type guide will walk you through the basics!

The five basic types of knives are:

Now, let’s dive into the different types of pocket knives:


Spyderco Para 3

Manual folding knives have a blade that folds inside the handle, covering the cutting edge. Many of these types of knives have a locking mechanism that keeps the blade in the open position. All manual knives feature a mechanism to keep the blade closed and safe in your pocket.

Detent ball in a knife
Detent ball in a knife

This picture shows the detent ball that is used to keep a blade in the closed position. It is the most common type of “stay closed” mechanism and works by the detent ball moving along the blade as it closes. The detent ball then settles in a small hole in the blade when it is fully closed.

Pros of Folding Knives

  • Compact/convenient
  • Very dependable
  • Protected cutting edge
  • Legal in many places

Cons of Folding Knives

  • Moving parts can get grimy/sandy/peanut-buttery
  • More moving parts = higher probability to fail
  • Smaller blades with less real estate
  • Pivot requires more maintenance

Folding Knife Uses

Yep, you guessed it. Most people use a type of folding knife for everyday carry (EDC). Common uses include everyday tasks like opening boxes containing newly acquired knives from Blade HQ, showing off to friends, or cutting into their favorite cheese wheel (we prefer Pepper Jack). They’re just plain handy to have around.

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Spring assisted knife

Spring assisted knives are a type of folding knife that flips open with a little assistance from the user. These knives have a spring or bar inside that puts tension on the blade, so when the user opens the blade to about 30 degrees, the blade then flips the rest of the way open. They often open with a flipper or thumb stud.

Pros of Spring Assisted Knives

  • Not considered switchblades or autos
  • Laws generally coincide with manual folding knives
  • Easy one handed opening
  • Open faster than manual knives

Cons of Spring Assisted Knives

  • More moving parts that can wear out/break
  • Pivot requires more maintenance
  • Possibility of opening in a pocket (extremely rare)

Spring Assisted Uses

Spring assisted knives came on the scene as a knife that opens faster than a manual, but would circumvent the strict Federal Switchblade Act of 1958 that governs push-button automatic knives. Because spring assisted knives open with a flipper or thumb stud, they typically are not considered automatic knives or switchblades in many legal jurisdictions. Many people use assisted opening knives like they would manual opening knives, but they fidget with them more. There’s something sweet and satisfying about that blade flipping open on a spring assisted–the sound, the lockup, the quick action– it’s dreamy.

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Automatic knives, or switchblades, have blades that flip open with the push of a button. There are also variations that open via a lever or switch on the handle. The two basic styles of automatic knives are side opening and Out The Front (OTF).

Side Opening

Automatic knife - Kershaw Launch

Side opening automatics have a blade that comes out of the side of the handle when a firing button is pressed. This snappy action makes the blade accessible quickly.

Side Opening Uses

Side opening automatic knives are designed primarily for the military and first responders like police and firefighters. What do all these have in common, you ask? Emergency situations happen all the time and when someone is trapped in a sinking vehicle, seconds count. Automatic knives are designed to open speedy fast for people with speedy needs.

Because of their rich history in Hollywood’s portrayal of urban street violence in the 1950’s, automatic knives face many harsh restrictions around the US. Consult your local laws before purchasing an automatic knife.


OTF knife - Microtech Ultratech

OTF, or Out the Front, knives have a blade that exits out the front of the knife. We know: hard to believe from the name. OTF knives are a style of automatic knife because they use a button to activate a spring to automatically open the blade.

Two types of OTF knives:

  • Single Action – Extend with the push of a button or slide, but then require a manual retraction.
  • Double Action – Extend with the push of a button or slide, and then retract with the same type of function.

OTF Uses

OTF knives are great for lighter use and normal EDC. OTF blades come in different shapes, but many people are drawn to the dagger blade style (blades that are sharp on both sides).

Just remember, because OTF knives and switchblades are often misunderstood, it’s important to consult your local laws before purchasing one of your own.

  Side Opening OTF
  • Rapid Blade Deployment
  • Fun to useEasy one handed opening
  • Great for emergency situations
  • Rapid blade deployment
  • Fun to use
  • Easy one handed opening
  • Often have glass-breaking pommel
  • Slim, rectangular design
  • Many law restrictions
  • Usually can’t use when parts break
  • Possibility of opening in a pocket (extremely rare)
  • Parts may wear out or break easier
  • Many law restrictions
  • Blade can come off track if it hits anything when deploying
  • Not as strong as other types
  • More internal parts that can break or wear out

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Fixed blade knife - ESEE 5

Fixed blade knives are just that; the blades on these knives are attached to the handle and cannot be folded.

Popular types of fixed blade knives:

Fixed blade knives vary in size, shape, and materials, which is why there are so many uses for different types of these knives.

Pros of Fixed Blade Knives

  • Easy maintenance
  • High strength
  • Many variations

Cons of Fixed Blade Knives

  • Harder to conceal and carry
  • Have to use with a sheath

Fixed Blade Uses

There is truly a fixed blade knife for every situation. Smaller neck knives can be great for concealment. Machetes are great for cutting large plants and trees. Many fixed blades also make great hunting knives. Bottom line: you can find a fixed blade for whatever you’re up to. Just make sure you’re not up to no good.

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Butterfly knife - BRS Alpha Beast Infinity

Butterfly knives, or balisong knives, have two handles that pivot around a blade. These knives are very popular for flipping and recreational use.

Pros of Butterfly Knives

  • Fun to flip
  • Can be used as a functional knife

Cons of Butterfly Knives

  • Not as practical as other knives
  • Many law restrictions across the country

Butterfly Knife Uses

Although butterfly knives can be used like other knives, their main use is for recreational flipping:

Don’t worry, if you want to get into flipping without losing a finger, that’s where butterfly knife trainers come in. These trainers have dull blades that won’t cut anything and are perfect for beginning flippers.

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Let’s preface this section by saying it’s going to get a little confusing, and that’s okay. We’ve gone over knife types, which are the manual, spring assisted, automatic, fixed, and butterfly. Now we’ll go more into knife styles.

A style of knife is like a category, such as hunting knives, OTF, throwing knives, etc. Some styles are made as multiple types, which leads us to this section. Let’s dig in, shall we?

  • Karambits are the ultimate self-defense tool. They are available in fixed blades, folding, and even butterfly knives.
  • Neck knives are usually compact knives that come in fixed blade and manual folding.
  • Hunting knives come in fixed blade, manual, and automatic, and are made to cater to a hunter’s needs. Most of these knives are fixed blade and have a mild curve, fit into a sheath, and are made to be sturdy. Specialty types like skinning knives are made for skinning animals.
  • Fishing knives come in fixed blade and manual folding, and are made for everything from cutting a line to prepping a fish for a nice feast.
  • Bowie knives are a style of knife that usually has a double edge at the point of the blade. They are a very popular style and come in every type of knife.
  • Multi-tools usually contain several blades along with other tools, such as pliers. A common example of a multi-tool is a Leatherman.
  • Dive knives are made specifically for scuba divers and usually contain materials that will not rust. They come
    in fixed blade and manual, and cater to every situation a diver may face.
  • Fillet knives can be fixed blade or manual, and have long, skinny, flexible blades that are used to fillet fish.
  • Throwing knives, axes and stars are designed for the sport of throwing. Many people use these recreationally, but just know that professional knife throwing is a thing.