'Pneutorque' pneumatic wrenches provide a smooth and continuous output drive which can be controlled by means of an air pressure regulator (Lubro Control Unit). Having set the air pressure from the supplied graph, the tool will stall out with a repeatability of +/-5% on a given joint. Automatic Two Speed models offer all of the advantages of the single speed versions but with the additional benefit of a run down speed five times greater than the final torque speed. Because the Automatic gearbox changes without having to stop the tool, the tightening cycle can be completed faster. When torque monitoring is required, or electronic shut off with a repeatability of +/-1%, annular transducers are available as an option on all models.