2Pcs Quick Connector Adapters R1234YF to R134A High and Low Quick Couplers Connectors Features: [Wide Application] This low and high-side quick coupler is suitable for R1234YF and R12 to R134A automotive air conditioning AC charging systems, R1234YF refrigerant, AC manifold pressure gauge, diagnostic checks, recovery, and evacuation tasks. [R1234YF High Side] R1234YF high side quick connector in red: High pressure side R1234YF connector with 17mm female x 1/4" SAE male. R12 to R134A adapter connector: 1/4" SAE female x high pressure 16mm R134A quick connector. This R1234YF quick coupler supports R1234YF/R12 to R134A vehicle AC charging applications. High-quality R1234YF to R134A hose adapter with durable construction for reliable performance and extended use. Ball lock design and rubber sealing ring ensure secure sealing during R1234YF to R134A conversion. [Easy to Remove and Install] The R134A to R1234YF quick coupler features an auto-shut-off function, allowing for easy connection and disconnection. The ball lock mechanism combined with a rubber seal delivers excellent sealing performance. [High-Quality Material] The quick coupler is constructed from brass material, offering strength, durability, high pressure resistance, corrosion resistance, and long-term reliability. [R1234YF Low Side] Blue connector is the R1234YF low side quick connector: low pressure side R1234YF connector with 14mm female x 1/4" SAE male. R12 to R134A adapter connector: 1/4" SAE female x low pressure 13mm R134A quick connector. Specifications: 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 Connectors Note: Due to differences in monitor displays, the image may not reflect the actual color of the product. Slight dimensional variations may occur due to manual measurement. Thank you for your understanding.