WEH Pro Set TW111 with 90° media inlet With the WEH Pro Set, you are perfectly equipped for filling refrigerants. The Pro Set consists of one WEH Connector TW111 with 90° media inlet for the high pressure port (red) and for the low pressure port (blue), front seal set (5 units) and O-ring picker. The service connector TW111 with inline media inlet is also available in a convenient Pro Set. Of course, all components are also available individually.