The Robinair 18192 Field service coupler set connects to Robinair's special Enviro-Guard hoses to allow access to service ports on automotive R-134a A/C systems. The quick-connect design has an integral safety sleeve, which protects against injury and refrigerant loss if the coupler is disconnected under pressure.

The compact design of the 18192 couplers easily fit into tight quarters, which is especially handy for retrofits. Six-ball couplers provide a more stable grip on the fitting than do couplers with four balls. The 18192 comes with 2 couplers, 1 with a blue actuator, and the other with a red actuator.