Lisle 42920 Universal Fan Clutch Wrench Set - 2 Piece Removes fan clutch on most models Comes in box Holding wrench is adjustable to fit bolts that attach pulley to the water pump The turning wrench has the 5 common fan clutch nut sizes built into one tool: 7/8" (22 mm), 1 7/16" (36 mm), 1 9/16" (39 mm), 1 7/8" (47 mm) and 2" (50 mm)