2Pcs Quick Connector Adapters R1234YF to R134A High and Low Side Quick Couplers for Automotive AC Systems Features: [Wide Application] This set includes high and low-side quick couplers designed for use with R1234YF, R12, and R134A automotive air conditioning systems. Ideal for AC refrigerant charging, pressure gauge connections, diagnostic checks, recovery, and evacuation procedures. [R1234YF High Side] The red high-side quick connector is compatible with R1234YF and R12 systems. Features a 17mm female inlet and 1/4" SAE male outlet. Also includes an adapter from 1/4" SAE female to 16mm R134A high-pressure quick connector. [R1234YF Low Side] The blue low-side quick connector is designed for R1234YF and R12 systems. Features a 14mm female inlet and 1/4" SAE male outlet. Includes an adapter from 1/4" SAE female to 13mm R134A low-pressure quick connector. [Easy to Install and Remove] Equipped with an auto-shut-off mechanism for quick and secure connection and disconnection. The ball lock design ensures reliable engagement while enhancing ease of use. [Reliable Sealing Performance] Integrated rubber sealing rings provide excellent leak prevention during operation, ensuring safe and efficient refrigerant handling. [Durable Construction] Constructed from brass material for high strength, corrosion resistance, and long-term durability in demanding automotive environments. Specifications: Product Name: Quick Couplers Material: Brass Dimensions: 7.3 x 1.6 cm (2.8 x 0.6 inches) Colors: Red and Blue Package Included: 2 x Quick Connectors (1 Red, 1 Blue) Note: Due to variations in monitor displays, actual product color may differ slightly from images. Please allow minor dimensional variations due to manual measurement.