Spiked Rings from Top 10 Samurai Weapons

Contrary to intuition, users wore these rings with their spikes hidden in their palms as the kakute's main advantage lay in its grip. One ring would be worn on the middle finger while a second ring could be placed in the thumb. Serge Mol writes, "The main purpose of the weapon was to gain a firm hold on an opponent, with the teeth digging into pressure points to cause pain… The surprise effect of this weapon would cause an opponent to lose concentration, making follow-up techniques easier." Like tekko, kakute could be dipped in poison for added effectiveness.