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Detroit Lockers are born and bred right here in the United States. Detroit Lockers are the automatic, positive-locking differential that has successfully driven more vehicles over more types of terrain than any other traction differential in its class. Detroit Lockers offer a positive gear action where no clutches are used to engage the axles. Its automatic operation works easily in both reverse and forward action. And its special design minimizes shock loads created under stress. The pressure or stress can be transferred directly to your driveline sometimes causing or hastening early failure. The bottom line for all Detroit Locker products is that they are TOUGH...PERIOD!