2Pcs Quick Connector Adapters R1234YF to R134A High and Low Side Quick Couplers Connectors Features: [Wide Application] This low and high-side quick coupler is suitable for R1234YF/R12 to R134A car air conditioner AC charging, refrigerant handling, AC manifold pressure gauge connection, diagnostic checks, recovery, and evacuation work. [R1234YF High Side] R1234YF high side quick connector in red: High voltage side R1234YF connector 17mm female x 1/4" SAE male. R12 to R134a adapter connector: 1/4" SAE female x high voltage 16mm R134A quick connector. This R1234YF quick coupler fits R1234YF/R12 to R134A car air-conditioning AC charging. High-quality R1234YF to R134A hose adapter with strong construction for reliable performance and long-lasting use. Ball lock design and rubber sealing ring ensure good sealing for R1234YF to R134A conversion. [Easy to Remove and Install] The R134A to R1234YF quick coupler has an auto-off function, making it easier to remove and install. The ball lock design combined with the rubber seal provides excellent sealing performance. [High-Quality Material] The quick coupler is made of brass metal material, which is strong and durable, with high strength, rust resistant, not easy to break, and can be used for a long time. [R1234YF Low Side] Blue is R1234YF low side quick connector; low side R1234YF connector is 14mm female x 1/4" SAE male. R12 to R134a adapter connector: 1/4" SAE female x low voltage 13mm R134A quick connector. Specification: Product Name: Quick Couplers Material: Brass Size: 7.3 x 1.6cm / 2.8 x 0.6 inch Color: Red + Blue Package Included: 2 x Connector Note: Due to differences between monitors, the picture may not reflect the actual color of the item. Please allow slight dimension differences due to manual measurements. Thank you for your understanding.