Does the Job Much Faster than Conventional Fan Clutch Wrenches. Set includes nine driving wrenches that fit Ford, GM, VW, BMW, Chrysler and newer International. Driving wrench sizes include: 7/8", 32mm, 36mm, 40mm Thin, 47mm, 1-7/8", 2", 52mm, and 2-1/8". Use with an air hammer.