Amazon.com: AIEVE Bottle Adapter Compatible with Sodastream Machine, 3 Pack 28 mm Bubble Bottle Adapter Compatible with Sodastream Fizzi, for SodaStream Terra, for SodaStream Art (Green, Blue, Pink): Home & Kitchen
Sodastream Bottle Adaptor for Standard CO2 Regulator - iKegger Pty Ltd (Europe Branch)
Advanced Adapter For Australia And New Zealand SodaStream Cylinders | CO2 Supermarket
Mixcover PET-bottle adapter suitable for Sodastream Easy-for small PET bottle- Mixcover