R-134a Low-Side Adjustable Quick Disconnect with adapter - For use with R-12 or R-134a Hoses

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Screw down manual couplers adjust easily to R-134a service ports with varying valve depths.
All metal construction for extra durability. 
These adapters can be removed from service ports without losing refrigerant. 
Colour coded handles complete with conversion adapters and "0" Rings 

Low Side Blue