Refill Adapter for Lihter S.T.Dupont :

Refill Adapter for Line 1
Big "Red Gas" and Small "Yellow Gas" Size

Refill Adapter for Line 2 Big "Green Gas" Size

Refill Adapter for Line 2 Small "Yellow Gas" Size

Refill Adapter for Line D and LD "Blue Gas"

Refill Adapter for Soubreny "Blue or Yellow Gas"

There are several types of adapters more or less compatible,
Here are some examples