Using Sodastream Bottles

[Keno]

I am sure this must have been asked before but is there an adapter I can use to attach a Sodastream bottle to a CO2 Regulator and if there is where can I get one.

 

[samc]

hi iv got a hydor advanced system and that fits onto the regulator without any of the adapters you get with it. i picked up 4 bottles for about £18 which is quite cheap.
thanks