Quick CO2 Adapter for Sodastream DUO/Terra/Art – TR21-4 brass fitting with included gasket

⚙️ General Description: Quick-connect brass CO₂ adapter for SodaStream sparkling water makers (DUO, Terra, and Art models). Easily connect your machine to a standard TR21-4 CO₂ cylinder — ideal for discerning DIYers who want more freedom, responsiveness, and savings. 📋 Technical Specifications: Material: Solid brass (corrosion-resistant, optimal seal) Female thread: TR21-4 (European standard DIN477 / JIS m22-14) Weight: 140 g Contents: 1 adapter + 1 O-ring + 1 installation guide 🔧 Installation: Intuitive 3-step installation — no tools required. Attaches directly to the CO₂ cylinder and connects immediately to your SodaStream machine. No adjustments or calibration required. 💡 Use: Use it daily to carbonate water with a single click. Perfect for busy households, homemade sparkling water enthusiasts, or those committed to zero waste. Immediate time savings, increased battery life, and uninterrupted enjoyment. 🌍 Other information: Compatible with European markets: France, Germany, United Kingdom, Switzerland, Poland, Sweden, Norway, Czech Republic, Ukraine, Russia, South Africa, Chile, Singapore, South Korea, Japan. Designed to replace official cartridges — a sustainable and economical solution.