Wisepick A/C AC Compressor R-134A Quick Manual Coupler Adapter SAE J-639 Connectors 100% Brand New Manufactured for quick and easy installation Accurate snap lock & knurled grip ring for easy operation, detachable adapter for longer maintenance Super fast shipped and well packed by Amazon! (Your order will be fulfilled by Amazon, which accepts refund and return under any reasons, but pls ensure that the package is the same as you received, before you ship the item back. Thank you!) We provide 100% perfect customer service, please contact if there is ANY problem