Kunai Knives Have Incredible Features And Designs

kunai knife

Despite being one of the most commonly used tools in martial arts, Kunai Knives can also be used as a multipurpose weapon. The great ninja warriors use kunais to fight in combat as a type of weapon. The ninja used this weapon as a tactical weapon during wars. 

Nonetheless, these knives were used by the ninjas to dig holes into walls, as we will see if we look back into their history. The famous ninja characters of manga and ninjutsu used them as both a primary and a secondary weapon.

Kunai Knives Were Originated From:

There is an ancient Japanese weapon called Kunai which is a weapon whose origin is Japan and which means "without difficulty." This tool comes from the Sengoku period and it was used for farming and gardening at that time.

Additionally, this weapon may be used for many other purposes. There were various uses for it, including use for digging holes and to climb mountains. Carpentry as well as masonry made use of it.

Having a perfect centre of gravity and symmetrical design, the Kunai knife works extremely well. Eventually, it became one of the most frequently used weapons in the arsenals of ninjas. Furthermore, its discreet design and versatility made it an effective weapon. 

Kunai Knives: Designs And Features

Similar to shuriken, it can be hit, punctured and even thrown as a weapon. Furthermore, this tool is characterised by its lack of sharp edges, making it easy to handle from all sides. 

The standard kunai knife is usually 30 – 50 cm (12 to 20 in) in overall length. Most have a straight blade that is 15 to 20 cm (6 to 8 in) long and 4 to 6 cm (1½ inches) wide. An up-to-date knife will have handles made of steel or plastic with a diameter of 5 mm (¼ inch). 

Kunai knives have an incredibly unique design. A rope can be tied to the hoop at the base of the handle which is used to tie the blade to the handle.  They are used for a variety of purposes that include farming, gardening, and landscaping. They can also be used as throwing knives and are effective for self-defense.

Types Of Kunai Knives

Kunai knives come in two varieties, straight and wavy-edged.


  • Straight kunai blades are usually made of carbon steel. 


  • Wavy-edged blades are usually of softer metals that are easier to resharpen than carbon steel. 

The most common soft metal is copper. Some makers will use stainless steel or other materials with a higher melting point for the blade spine, handle, and pommel (a piece of metal at the tip). There is also a variation of the type called the Yoshida Kunai knives which has an extremely sturdy blade and is at least 2 inches longer than others of its kind.

Technique Of Using Kunai

These weapons are difficult to use. Since to become an expert you must practice a lot, this is due to the complexity of its management. In addition, an instructor should guide you.

By gripping their handles or spinning them with the hole in their bases, Kunai are usually thrown. Similarly, we throw them by extending our arms toward the front. We can also throw from the top down. There are many options.

Use of a Kunai: Precautions to be taken:

When using a kunai knife, precautions must be taken. Check out these tips!


  • Playing with bladed weapons such as kunai knives is never a good idea.
  • Make sure that such weapons are only used for serious purposes.
  • When using any of these types of blades, always wear gloves to protect your hands.
  • Your children should never be given such weapons.
  • Do not use such weapons unless you have been properly trained to handle them.

Strength Of Kunai Knives

The kunai knife's strength is in its lightweight and versatility. The handle is an effective gripping point; one can even hold it with just a single finger while thrusting upwards into his or her enemy. They are also used for many other purposes which make them extremely useful tools. 

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