These uniquely designed tools are used in conjunction with Schley #62100 to loosen and tighten the fan clutch on Audi, BMW & VW. On later model Audi A6 and VW Passat water pump pulleys are pressed on and pins in the 63600 are inserted into the pulley to hold the water pump stationary for fan clutch removal and replacement. The 32mm Fan Clutch Wrench #62100 works with #63600 on the following applications: Audi A6 1996-2001 2.8L, S4 2000-2002 2.7L, A6 2000 and later 2.7L, Allroad 2001 and later 2....