What do I need to look for in my regulator?

[Finlandbrews]

I live in Finland and a friend of mine works in a welding shop and proposes me this regulator as seen on the pictures? I can not assess what should I pay attention to when buying a regulator and does it suit for beer dispensing? Could I adapt it to go to my keg with some American hose? Thank you for advices!

 

[Bellybuster]

Pics?

 

[Finlandbrews]

Should the regulator be in stainless steel or what is the best material?

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