"Quickly removes and installs fan clutch when repairing the water pump or fan clutch","Faster and easier than conventional fan clutch wrenches","Set includes 9 driving wrenches that fit Ford, GM, Chrysler \u0026 Jeep","Set now includes the patent pending 52mm to fit Chevy Duramax and the patent pending 2-1/8\" wrench for newer International trucks, 7/8\", 32mm, 36mm, 40mm thin, 47mm size to fit Ford 6.0L and 6.4L Powerstroke diesel pickup","On the 52mm, and 2-1/8 wrench you can also use a ratchet or breaker bar in the double square drive.","Use with an air hammer 10 PIECE MASTER FAN CLUTCH SET PFC10 | Matco Tools