SHLD-G4 JB Industries Shield Tamper Resistant Access Valve Locking Cap R-22 Green - 4 Pack - Shield Locking Caps - The Shield™ refrigerant locking cap is the best option to meet both the IMC and IRC codes. The Shield™ uses a patent pending all brass design to provide great protection without corrosion.
Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov