Drill bit shank A hex shank can be grasped by a 3-jaw drill chuck or held in a chuck specifically for hex shanks. Quarter-inch hex shanks are common for machine screwdriver bits and have spread from that application to be used for drill bits that are compatible with screwdriver machinery. The diameter of an SDS and SDS Plus shank is 10 millimeters. (The SDS Max is 18 millimeters.) The SDS shank has the advantage of fitting into a simple spring-loaded chuck, so that bits are simply pushed into the chuck without tightening. This shank and chucks made for it are especially suited to
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