A. 2 Quick Connector Adapters: R1234YF to R134A Quick Couplings B. # Features 1. **Wide Application**: These high and low - pressure quick couplings are suitable for R1234YF/R12 to R134A automotive air conditioning charging, R1234yf refrigerant, air conditioning manifold pressure gauges, diagnostic inspections, recovery, and vacuuming operations. 2. **R1234YF High - Pressure Side**: The red R1234YF high - pressure side quick connector. The high - pressure side R1234YF coupling is a 17 mm female × 1/4 inch SAE male. The R12 to R134a adapter coupling is a 1/4 inch SAE female × high - pressure 16 mm R134A quick coupling. This R1234YF quick coupling is suitable for R1234YF/R12 to R134A automotive air conditioning charging. The R1234YF to R134A hose adapter has a relatively robust structure, ensuring certain working performance and service life. The ball - lock design and rubber sealing ring ensure a certain level of sealing during the R1234YF to R134A conversion. 3. **Easy to Disassemble and Install**: The R134A to R1234YF quick coupling has an automatic shut - off function, which makes it relatively easy to disassemble and install. The combination of the ball - lock design and rubber seal provides a certain sealing performance. 4. **Relatively Good Materials**: The quick couplings are made of brass metal materials, which are relatively strong, durable, rust - resistant, not easily broken, and can be used for a relatively long time. 5. **R1234YF Low - Pressure Side**: The blue one is the R1234YF low - pressure side quick connector. The low - pressure side R1234YF coupling is a 14 mm female × 1/4 inch SAE male. The R12 to R134a adapter coupling is a 1/4 inch SAE female × low - pressure 13 mm R134A quick coupling. C. # Specifications - **Product Name**: Quick Coupling - **Material**: Brass - **Dimensions**: 7.3 × 1.6 cm / 2.8 × 0.6 inches - **Color**: Red + Blue D. # Package Contents 2 Connectors E. # Notes Due to differences between different monitors, the pictures may not accurately reflect the actual color of the item. Slight dimensional differences may occur due to different manual measurements. Thank you for your understanding.