Tetsubishi are small caltrops designed to hinder someone by sticking in the feet when stepped on. Made from steel with 4 spikes so that one spike is
martial arts ninja caltrop tetsubishi Makibishi foot spike, tire spike, deterant
Makibishi - Wikipedia
caltrop 3D Models to Print - yeggi
Velké ostré Ninja Tetsubishi ocelové hroty 8 ks za 369 Kč - Allegro
caltrop 3D Models to Print - yeggi
Sparepart Mesin Tenun
Caltrop - Wikipedia
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Ninja Small Spikes MAKIBISHI – Ninja Store Japan
tetsubishi – Bushi Dojo
Sengoku Ninpo Zukan Translation w/pics Masaaki Hatsumi Bujinkan Ninjutsu - Rainforest Medspa
Caña de Bambú Baseball, Baseball bat, Bat