Capture Pole, Overlord-class
Built to resemble an ancient pre- Gap weapon used to apprehend prisoners of war, a capture pole consists of a polearm with a twopronged robotic head that snaps shut when its center is pressed against a target during an attack. Designed to lock around a creature's neck, each of a capture pole's prongs are outfitted with armor-piercing syringes used to inject a creature with a substance, typically a sedative to make apprehension easier. This occurs on a successful attack roll for a melee attack or grapple combat maneuver. Capture poles are favored weapons among the drow, who use them to capture slaves and discipline their orc servants.
Source
Character Operations Manual pg. 122
Dragonscript
ID
2c43458b4a6292ab17d8fdc8