There are six models to the TUFTorq HSQ Series capable of delivering a range of torque forces from 190 Nm / 258 ft lbs to 45,091 Nm / 33,155 ft lbs.AIl models have an accuracy of +/-3%.The push through square drive allows the tool to be used for both bolt tightening and loosening. The quick release swivel couplings enable ease of positioning of the wrench during operation.