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radiator key

Heizkörper- Entlüftungsschlüssel

pfffffffff

be careful! soon comes the-

PSCHHHHHHHHH

OOOPS - Oh no, there's water leaking! - What do I dooO?

PSSSCHHHT

I MUST NOT PANIC!

TSSSSSS

NOOO, should I call the mechanic?

I just want to do it myself!!!

What if I wind it up to much and it starts walking away?