Used to reset the EMF adjustment unit & piston to the starting position.
This tool has three pins that lock into the piston and a 3/8" fitting for your ratchet.
Simply ratchet the piston back in to reset it.
WARNING: California prop 65 - This product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/