Known variously as the Sai, Jitte, Bundi Katari, Swordcatcher or by a variety of different names, this remains basically the same weapon. A multi-pronged fork is used to catch an opponent's weapon, either breaking it or hurling it away. The weapon can also be used to prod an opponent directly, through the striking surface is usually not as good as that of a regular sword or cane.
Disarm
You can entangle other weapons, especially long and powerfully unbalanced weapons. Add the damage add of your opponent's weapon to any disarm stunts you try to make.
Lock
Lock is only applicable to off-hand weapons weilded together with some other weapon - which can be an indentical copy of itself. Use your main weapon to lock your opponents blade, opening him up for an off-hand attack. You can now use the Lock weapon to attack your opponent after his weapon has been caught in a clash of steel.
When you miss an attack against an opponent with your main weapon, you may immediately expend an additional shot and make a normal attack with this weapon.