Pro Torque Tools sells preset T-handle torque drivers from the best manufacturer in the USA - Seekonk Precision Tools. These types of drivers are perfect in production or for repetitive tasks where the desired torque level is constant. The T-Handle torque wrench design allows for leverage to be applied more easily to the tool and reduces fatigue and stress on the wrist. Seekonk Drivers can be set in In Oz, In Lbs, Ft Lbs or Nm, cNm and each tool is stamped with with the torque level that it is set at. The Seekonk slip torque wrenches offer an accuracy rates of 4% and come with a NIST Certificate of Calibration.