Streetside Tools GM -Powerglide (ALPG) Rear Clutch Spring Compressor Tool This tool will remove the Low/ Reverse clutch piston in the rear of the case. Makes removing the clutch spring retainer easy. The tool engages the lugs and pushes the piston return spring enough to access the snap ring. The whole process takes just a few minutes. Similar to Atec Trans-Tool T-0150 For use on these Transmissions: Powerglide (ALPG)