Hvac Rectorseal Refrigerant Locking Caps | R410 5/16″ Eurocap Tamper Proof Caps (10 Pack)

Novent Locking Caps Seal Standard Schraeder Service Valves On Central Ac Units And Minisplits To Help Prevent Refrigerant Leakage. Safe Guard Your Ac System Efficiency From Loss Or Accidental Mixing Of Refrigerant Gases And From Serious Injury Or Death Resulting From The Inhallation Of Dangerous Refrigerants.