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 78, 32mm, 36mm, 40mm thin and new 47mm size to fit Ford 6 0L and 6 4L Power stroke diesel pickup 1-78and 2 are still included in the set Use with an air hammer Includes blow molded storage case