Product Description: 1. Wide Application: This T-0158 Universal Clutch Drum Spring Compressor Transmission Tool will fit most common clutch drums up to 6" in size. Compatible with Chrysler, GM, Turbo, also fits for Ford. To check more applicable models, please refer to the description below 2. Great Function: Removing the snap ring on a transmission clutch may be tricky. The tool is designed to relieve the pressure off the snap ring by compressing the return spring, allowing easy removal and installation of the snap spring. It will be very helpful for your work. (Attention: Does not do rear case pistons) .