Kakute
kakute were spiked rings used in ancient Japan. Though a similar weapon called the “shobo” was made of wood, kakute were usually iron and had from one to three spikes. A user would generally wear either one or two rings—one for his middle or index finger and another on his thumb. The spikes were usually turned inward and applied to pressure points by gripping limbs or even the neck, which wound stun an opponent and cause a nasty puncture wound. Turned outward, kakute became spiked knuckledusters, though since the purpose of kakute was generally to subdue enemies rather than harm them, this style was not the standard.
Ninjas also used kakute. They were favored by female ninjas, called kunoichi, for whom it was natural to wear rings. Worn inward and tipped with poison, they could use their kakute for quick, fatal attacks. For the female ninja, they proved to be one of her deadliest and most efficient weapons.
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