Vibro-Ax

Lando Calrissian went undercover as a guard in the palace of Jabba the Hutt, waiting in disguise for the right moment to rescue Han Solo. His weapon is a form of vibro-ax, a SoroSuub BD-1 Cutter. In such weapons an ultrasonic vibration generator makes the blade sing with a high-pitched whine, enabling it to lacerate with the merest touch.