JET 719072-1/2" Dr 1100 Ft/Lbs Torque Multiplier KitUsed to multiply applied force for setting and removing high torque fastenersPlanetary gear system multiplies input force many timesTorque multipliers lower physical effort, resulting in smooth, steady application of torque and increased accuracyPermits application of high torque without use of a long leverCan be driven with a torque wrench