These bronze, cold worked iron, or steel blades were infused by the ancient sith magicians with magics which rendered them nigh indistructable.

The only known means of destroying these blades is throwing them from an airlock into hyperspace, and modern sith alchemists still contend that the blade remains a coherent tachion packet somewhere in hyperspace, and so is not truely destroyed.

Many captured blades have been thrown into black holes and stars. Although this makes the blades almost impossible to retrieve, it is unclear whether or at what point the blades become destroyed by these processes.

This level of indistructablity is only possessed by the strongest and best made sith blades. Many lesser blades have been created which possess some flaw which allows them to be broken, but these are not the blades which wind up being past down from murdered master to skilled apprentice.

Blades vary in length from 30 cm (sith daggers) to just over 2 meters (sith greatswords), but an intermediate length allowing for both chopping and thrusting is the most common design. Blades of this style are light enough that they can be wielded with one in each hand, although some sith favor a style which keeps one hand open for other purposes.

Typically double edged with a grip just large enough for two hands. They mass 1.4 kg on average, which corresponds to the sith unit of measure, 1 "blade" of weight. (Since they were indistructable, the ancient sith used the cheiftain's sword as a standard measure of weight). Average length of the blade was about 0.89 meters, with the total length closer to 1.03 meters (again, a standard sith measure of length, also called a "blade").