This a2l refrigerant adapter is designed for technicians who need a secure and efficient way to connect with refrigerant cylinders, including those using R32 refrigerant and R454b refrigerant. The adapter features a 1/4" SAE reverse-thread outlet that attaches to a standard charging hose, offering straightforward operation in the field. Built with left-handed threads, it helps distinguish A2L applications while supporting confident system charging. A double-ring knurl provides quick visual identification of the left-handed connection, reducing the chance of attachment errors. Durable construction ensures the adapter withstands routine use while delivering long service life for HVAC and refrigeration professionals. The no-depressor design supports maximum flow, making it a reliable choice for handling modern refrigerants. Includes one F2010 adapter, 1/4" LH FPT x 1/4" MPT.