Tekko

The Tekkō(鉄甲, lit. "iron", "armor"), which originated in Okinawa, Japan, falls into the category of a "fist-load weapon". By definition, a fist-load weapon increases the mass of the hand so that, given the physical proportionality between the fist's momentum and its mass, it increases the force the bearer can deliver. Some fist-load weapons may also serve, in the same manner, as the guard on a sword, to protect the structure of the bearer's hand.