Weighing in at 2 and a half pounds the torpedo throwing weapon from cold steel is a must have for every....? umm ninja?
An interesting video below of some of the engineers having fun with this weapon
The sheer weight of this projectile weapon alone would do some damage when hurled at you.
Add on two pointy ends and you have yourself a lethal weapon. Cold Steel makes the finest lethal weapons.
I'm not entirely sure the purpose of these weapons other than recreational use at the range sometimes. Unless of course you are a modern day ninja and require projectiles for your everyday arsenal.
These throwing spikes are very similar to ninja stars however if uses properly can inflict more damage.
See Also.. .
Martial arts weapons list