2Pcs Quick Connector Adapters R1234YF to R134A High and Low Side Quick Couplers ConnectorsFeatures: [Wide Application] This low and high-side quick coupler is suitable for R1234YF and R134A automotive air conditioning systems, including AC charging, refrigerant service, manifold gauge connections, diagnostic checks, recovery, and evacuation procedures. [R1234YF High Side] The R1234YF high side quick connector is red and designed for the high-pressure side. It features a 17mm female connection and 1/4" SAE male thread. [R12 to R134a Adapter] Includes a 1/4" SAE female to 16mm R134A high-pressure quick connector adapter. This R1234YF quick coupler supports compatibility between R1234YF and R134A vehicle AC systems during charging and servicing. High-quality hose adapter made of durable brass construction for reliable performance and long-term use. Ball lock design with rubber sealing ring ensures secure and leak-free connections during R1234YF to R134A conversions. [Easy to Install and Remove] The quick coupler features an auto-shut-off mechanism that allows for easy and safe connection and disconnection. The ball lock mechanism combined with a rubber seal delivers excellent sealing performance. [High-Quality Material] Constructed from solid brass for strength and durability. Resistant to rust and corrosion, ensuring long-lasting use under demanding conditions. [R1234YF Low Side] The blue connector is the R1234YF low side quick coupler, featuring a 14mm female connection and 1/4" SAE male thread. Low side adapter: 1/4" SAE female to 13mm R134A low-pressure quick connector. Specifications: Product Name: Quick Couplers Material: Brass Size: 7.3 x 1.6 cm (2.8 x 0.6 inches) Color: Red + Blue Package Included: 2 x Connectors Note: Due to differences in monitor displays, the actual product color may vary slightly from images. Please allow minor dimensional variations due to manual measurement. Thank you for your understanding.