This adapter set is versatile and can be used for multiple applications.
It allows filling UK Calor Gas propane cylinders as well as European cylinders (German and French types).
It can also be used for vehicles running on LPG.
The set is compatible with external filling points that have a UK 21.8 mm right-hand outlet.
It also fits gas bottles with a UK 5/8" left-hand thread, as well as European bottles with a 21.8 mm left-hand thread.
In short, this set covers not only the UK and Europe but also works in many other major countries worldwide.