Quickly removes and installs fan clutch when repairing the water pump or fan clutch. Faster and easier than conventional fan clutch wrenches. No holding wrench is necessary. Set includes 7 driving wrenches that fit Ford, GM, Chrysler & Jeep. Set now includes 7/8", 32mm, 36mm, 40mm thin and new 47mm size to fit Ford 6. 0L and 6. 4L Power stroke diesel pickup. 1-7/8"and 2" are still included in the set. 1-1/2" 41mm and 42mm are still available individually. Use with an air hammer. Includes blow molded storage case.