Functions: This R1234YF quick coupler converts the R1234YF/R12 car air conditioner interface into the R134A male high and low voltage interface. liandgt 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. liandgt The ball lock design and rubber sealing ring ensure a good seal when converting R1234YF to R134A. liandgt Specification: Color: red,blueliandgt Red size:72,3 x 26 x 26 mmliandgt Outer diameter of the red upper interface:13,8 mmliandgt Internal diameter of the red upper interface:7,5 mmliandgt Internal diameter of the red bottom interface:17,5 mmliandgt Blue size: 70,7x25x25mmliandgt Outer diameter of blue upper interface:10,8 mmliandgt Internal diameter of blue upper interface:7,5 mmliandgt Internal diameter of blue bottom interface:14,5 mmliandgt Material: brassliandgt Red:High pressure quick couplerliandgt Blue:Low pressure quick couplerliandgt Package includes: 2x fast car air conditioner connectorsliandgt