- Low Side Adapter: The blue R1234YF Low Side Quick Coupler features a 14mm female connection on one end and a 1/4" SAE male connection on the other, designed specifically for R1234YF systems' low-pressure side. It includes an R12 to R134a Adapter Connector with a 1/4" SAE female end for seamless compatibility with low-pressure 13mm R134A quick couplers. - High Side Adapter: The red R1234YF High Side Quick Coupler comes with a 17mm female connection and a 1/4" SAE male connection, intended for the high-pressure side of R1234YF systems. The R12 to R134a Adapter Connector also features a 1/4" SAE female end that fits perfectly with high-pressure 16mm R134A quick couplers. - Durable Design: Constructed from high-quality materials with meticulous sealing, these adapter hose fittings can withstand both high and low pressure in refrigeration systems, ensuring reliability and safety during use. - Excellent Sealing: The ball lock design combined with a rubber seal offers superior sealing performance. The R134a to R1234yf Conversion Kit includes an automatic closing mechanism, simplifying disassembly and installation. Practical Applications: 1. Automotive Refrigeration: Ideal for automotive technicians working on R1234YF systems, ensuring quick and secure connections for efficient refrigerant management. 2. HVAC Maintenance: Useful for HVAC professionals who need reliable adapters for servicing air conditioning units using different refrigerants. 3. Refrigerant Conversion: Perfect for anyone converting R12 systems to R134A, providing the necessary connections for seamless transitions. This product is essential for anyone working with R1234YF or R134A systems, delivering compatibility, durability, and ease of use.