I installed a set on both my bikes, they are worth the money though I paid no where near 60 euro.
I bought mine from local speed shop, quality stuff and they work well.
easy to disconnect, no drips or dribbles and make tank removal a snap.
I'm sure they're available on amazon, rockauto, auotpartswarehouse, etc.
I'm away from home right now, else I'd include the make/model.
no regrets, money well spent.