Features:

• Restores life to spring up to 2-3/4'' for control of rear end torque.
• Compresses coils for maximum weight transfer.
• Easy to install without special tools.
• Adjust coil spring for cars.

Includes 2 spring adjusters, one is assembled for use in loosening position, the other is for tightening, depending on your requirements.
It is recommended that 2 spring adjuster used on each coil spring.