Interdynamics Sub-Zero R-134a ReChill Kit Synthetic A/C Booster (2 x 17 oz.) All in one solution, no additional tools required Increases cooling capacity by improving lubricity and creating better heat exchange Provides up to 18% colder air Compatible with all PAG and Ester lubricants Comes with a reusable hose and low-pressure gauge with temperature dial indicator build into the handle