AFF 3700 Heavy-Duty Clutch Jack 500 lbs. CapacityAFF 3700 Heavy Duty Clutch Jack 500 lbs. Capacity Highly Versatile "Clutch Hound" The American Forge & Foundry 3700 Heavy Duty Clutch Jack has a higher lifting capacity than most competitors clutch jacks at 500 lbs. A truly unique design that offers the capability to install, remove and transport heavy duty truck clutches easily and quickly. It comes with (2) splined alignment shafts (1. 75" OD X . 983" Pilot) and (2" OD X 1. 18" Pilot) that store