SodaStream DUO Hack! - Schraubzylinder verwenden statt den pinken Quick Connect QC CO2 Zylinder !!! - YouTube
Amazon.com: CO2 Adapter for Soda Water, Compatible with Soda Stream DUO/Terra/Art, Quick Connecting CO2 Cylinder with TR21-4 Male Thread, CO2 Adapter Accessories : Tools & Home Improvement
SodaStream DUO - Quick Connect Zylinder wechseln - YouTube
2x CO2 Quick Connect Tausch-Zylinder PINK 425g SodaStream DUO Terra / Tauschbox | eBay