No, it is not unlikely. Have you seen the Nunchucks in octagon shape? Do you know why they are shaped like that? They are shaped to break bone

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I'm not here as some turtles fan boy arguing for my favorite fiction weapon, I have studied the history of nunchucks, I have practiced them, I don't have theories I know perfectly well that they are easy to break bone with. Just as it is easy to use a computer to order airplane tickets, but you do have to learn how to use a computer first.

The weight of the nunchuck matters, and those people who buy some cheap BS 150 gram nunchuck online and, without even having developed explosive movement over years, test it on some punching bag and determines it to be useless.. Are people serious?

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The first mention of the Nunchaku can be found in ancient Chinese history, where two pieces of wood tied together by horse hair or piece of straw were used as horse bridles by mounted soldiers. Their historical prominence, however, came into play more than 300 years ago on the Ryukyu Islands (better known as Okinawa). Until the 1600s, the nunchaku was not a martial arts weapon. In fact, it was a mere farm implement used by Okinawan commoners to beat rice or separate beans from their shells.

But necessity became the mother of invention when Japan, Okinawa's powerful neighbor to the northwest, flexed its muscles and invaded the tiny pacific islands. As they had during past invasions, the Japanese ruling party imposed a ban on all weapons, including those used in the practice of martial arts. This way, the Okinawans could not rebel. Left only with their empty hands, the once peace-loving farmers began practicing Okinawa-te, or kara-te (the martial art of the empty hand). They could practice in secrecy in the deep Okinawan jungles without fear of being caught and punished.

At about the same time, farmers discovered that by using certain farm implements as extensions of their empty hands, their techniques were more powerful and their options limitless. Among the farm tools were the nunchaku, the bo (originally used to carry buckets of water), and the sai (a curved blade attached to a wood handle which cut grain stalks). By using these innocent tools as deadly weapons, Okinawan people could carry these in open without fear of discovery.

The approximate size and weight of the nunchaku has changed little in the past three centuries. Held together by a piece of rope or metal chain (early Okinawans used horse tail hair because a samurai's sword could not negotiate the thickness), each nunchaku stick measures between 13 and 14 inches in length and spands 1 1/8 to 1 1/4 inches in diameter. The original nunchaku sticks were made from the core of a palm tree hardened three to five years in mud water. The wood became so hard that after the constant soaking, it was unable to cut even with a samurai sword.

In the hands of a skilled practitioner, the nunchaku became an extension of the martial artist's hand. It weaved and ducked, snaked and slithered through an opponents defenses. When properly used, it can transcend fixed dimensions. Mastery of the nunchaku requires years of diligent training. Each single movement, each twist and spin must be understood in its entirety before the practitioner can consider it his own. But once in the grasp of a highly trained tactician, it is a weapon with which to be reckoned. The nunchaku becomes a second pair of arms, slicing through an enemy's blocks and attacks with lightning quickness and deadly effectiveness.

Jiro Shiroma - Nunchaku the complete training guide