Lisle 42920 2pc Universal Fan Clutch Wrench Set. Removes Fan Clutch on Most Models. This 2-piece set removes and installs fan clutches. The set includes a universal holding wrench and a universal turning wrench. The holding wrench is adjustable to fit the bolts that attach the 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). Both wrenches are long to provide extra leverage for stubborn fan clutch nuts. Made of heat treated alloy steel to provide strength.