WIPCOOL Dual Cylinder Recovery MachineThe WMRM75 is an efficient, and reliable refrigerant recovery machine with a compact, sturdy casing. Dual pistons provide an ideal solution for making refrigerant recovery fast and efficient. Different from most brands of refrigerant recovery machines, it adopts overhead pressure gauge and operating key design. In addition, there has a service port at the back of the machine, so it will be very convenient to replace the piston ring and air valve core.