Drill bit shank shaft and shank, is usually of the same diameter. It is held usually in a three-jaw drill chuck. Bits of diameter too small to grip firmly can have straight shanks of larger diameter than the drill, which can be held firmly in a standard size collet or chuck. Large drill bits can have straight shanks narrower than the drill diameter so that they can be fitted in chucks not able to chuck the full diameter. Such a drill bit is called a reduced-shank or blacksmith's drill. For example, this allows a bit to be used in a pistol-grip drill's chuck.
Fear Is the Key force him to provide the necessary resources. Talbot has been working for the authorities all along and convinces Vyland and Royale that he is now ready to die on the ocean floor beside his family, eliciting a terror-stricken confession from the two men (their fear of death being the key that unlocks the confession) which is relayed to witnesses on the oil platform. Talbot then returns to the oil platform, where Vyland throws himself to his death from a ladder. Royale survives to be tried and sentenced to death and Talbot, politely turning down General Ruthven's offer of any reward