Produktbeschreibung

The rinsing adapter is a spare part in the case VAS6338/1A and is used to connect various components of the air conditioning system to the air conditioning service unit.
Specifications: Aluminium 7075/T6 with xH4, inner plug 28.4 mm.  You can find the corresponding information on use in the Workshop Manual for the relevant vehicles.

Source: https://vw.snapon.com/SpecialToolsDetail.aspx?itemId=68070038