A weapon used by Goa'uld, also known as a "ribbon device." The device is a useful means of interrogation and can inflict great pain. It is capable of emitting a powerful blast of energy to send a foe hurtling across the room. It is also capable of directing a much less intense, yet very deadly, ribbon of energy -- usually directed to the victim's forehead. Extended exposure is lethal.
The device works largely through the user's thought or emotion, theoretically allowing the user to communicate a message to his or her victim, if held in an extended "grip" of less intense energy.
Thor's Chariot - After the death of a Tok'ra symbiote inside her, Carter learns she has the ability to use the hand device.
Into the Fire - Hathor attacks a Tok'ra spy in her ranks with a hand device.
Seth - Carter uses the hand device to kill the Goa'uld Seth.
Forever In a Day - Sha're uses her symbiote's (Amonet) hand device to trap Daniel Jackson in his own subconscious and communicate with him.
Revelations - Osiris turns her hand device on Sam Carter, before the Asgard beam her away to safety.
Evolution, Part 2 - The Goa'uld Thoth tries to use his hand device on intruders on Tartarus, but is killed by Carter and Teal'c before doing so.
Chimera - Osiris uses a hand device to subdue a sleeping Daniel Jackson, so that she may freely use the Tok'ra memory device to infiltrate his dreams.