Triple-bladed Energy Knife was a type of bladed energy weapon used by various factions during the Cold War

The Cold War Event Cold War (3653BBY - 3642BBY)

.
Small but dangerous, it had three blades angled at 120 degrees around virtual central axis. The knife's handle concealed a power pack, that, when activated, charged the blades, delivering a powerful jolt of energy to the target upon contact. In case of power pack depleted, the knife could be used as a conventional melee weapon.