Set of drill bit, method of data recovery hole below and killing tool

摘要

Set of drill bit, method of data recovery hole below and Cape of tooling in some aspects of the present invention, umconjunto of drill bit has a body intermediate part of a shank and a working part. Aside from working at least a cutter element.In some realizations, the set of drill bit has a mechanical axis with one end substantially coaxial to a central axis of the geometric series. The tip of the mechanical axis is substantially projected from the working part, and at least one input device, flat - below is disposed within or in communication with the mechanical axis.