An apparatus that can be used during drilling operations for the purposes
of clamping and holding drilling tubulars is disclosed. The embodiments
relate to machinery that clamp and hold drilling tubulars to allow
assembly to a specified torque or disassembly of the tubulars. The
apparatus comprises a first grip with teeth inserts housed in a gripping
block that opposes a second grip with teeth inserts housed in a second
gripping block. The first and second grips are spaced and adapted to
accommodate a range of diameters of drilling tubulars. Further, the
gripping blocks are held by opposing arms connected to a driving means to
create a tightening or loosening movement of the grips and maintain a
certain orientation with regard to the tubulars.