Vibroblades were a type of bladed melee weapon that used ultrasonic vibrations to increase cutting effectiveness. Swords, pikes, knives, and axes all consisted of the same basic design: the weapon's hilt or handle usually contained a compact ultrasonic generator, causing the blade to vibrate at an incredible speed, making even the slightest glancing blow become a gaping wound. Its cortosis weave allowed it to parry the blows of lightsabers, energy swords, or a random blaster bolt.
The cortosis weave became less common when the probability of fighting a lightsaber-wielding opponent decreased. By the time of the Galactic Civil War, knowledge of cortosis, as well as the mineral itself, was extremely rare.
Vibro-bladed weaponry was more common on isolated, less civilized worlds such as Tatooine. Jabba Desilijic Tiure's personal Gamorrean guards were known to use vibro-axes, and his skiff crew also used pikes with vibro-bladed cutting edges. During his infiltration into Jabba's palace, Lando Calrissian used a SoroSuub BD-1 Cutter vibro-ax as his primary weapon. Vibroblades were popular among criminals, resulting in them being banned on many worlds.
Clone Commandos had retractible Knuckle plate vibro blades.