Features and Benefits: Use with 1/2 square drive tools and a torque wrench Remove and replace fan assembly on Ford 6.9L and 7.3L engines Wrench openings- Long: 48mm Wrench openings- Short: 83mmThis set is used to remove and replace the thermostatic fan assembly on Ford 6.9- and 7.3-L engines. This is not to be used with power tools. Refer...