... prices C.accept OEM D.check...... FS2519 professional part about Air Conditioning Coupling A.ALWAYS BE IMITATED,BUT NEVER BE EXCEEDED.B ... to use5.easy to use1.Spring type coupling connectors for air conditioning lines.2.Locking action prevents spray when disconnecting lines.3 ... 8",1/2",5/8",3/4",couplings.5.car repair tools refrgeration equipment FS2519 professional part about Air Conditioning Coupling