Spaulders - Are pieces of armour in a harness of plate armour. Typically, they are a single plate of steel or iron covering the shoulder with bands (lames) joined by straps of leather or rivets.
Sai - Is a traditional weapon used in the Okinawan martial arts. The basic form of the weapon is that of a pointed, prong shaped metal baton, with two curved prongs called yoku projecting from the handle. Sai are generally used in pairs.
Shuriken - is a traditional Japanese concealed weapon that was generally used for throwing, and sometimes stabbing or slashing. Shuriken is the name given to any small-bladed object, while shaken is traditionally used to indicate the well-known "throwing star".
And that's it for today! See you tomorrow!