Functions: This R1234YF quick coupler converts the R1234YF/R12 car air conditioner interface into the R134A male high and low voltage interface. li> Made of brass metal material, which is sturdy and durable with high strength, anti-corrosion, not easy do break and can be used for a long time. li> The ball lock design and rubber sealing ring ensure a good seal when converting R1234YF to R134A. li> Specification: Color: red,blueli> Red size:72,3 * 26 * 26 mmli> Outer diameter of the red upper interface:13,8 mmli> Internal diameter of the red upper interface:7,5 mmli> Internal diameter of the red bottom interface:17,5 mmli> Blue size: 70,7*25*25mmli> Outer diameter of blue upper interface:10,8 mmli> Internal diameter of blue upper interface:7,5 mmli> Internal diameter of blue bottom interface:14,5 mmli> Material: brassli> Red:High pressure quick couplerli> Blue:Low pressure quick couplerli> Package includes: 2x fast car air conditioner connectorsli>