These 'Pneutorque' models share the same features as the 'Standard' series, but have a higher torque output for a given gearbox diameter. Two Speed Models offer all of the advantages of single speed versions but with the additional benefit of a run down speed five times greater than the final torque speed. The Manual Two Speed gearbox can enhance the degree of control that the operator has over the tightening process, as the gear speed can be changed manually.