The d'k tahg is a vicious three bladed knife carried by almost every Klingon. It is commonly used in hand to hand combat, but more importantly it is of great ceremonial value to the Klingons. To a Klingon warrior the d'k tahg is a representation of his or her personal honour - to take the knife from a warrior is to steal their honour, and is a terrible insult. The d'k tahg features in many Klingon rituals. It has been in use since at least the mid 22nd century - Malik used a d'k'tahg to kill Persis on the Klingon Bird of Prey they captured in 2154.