Features: - Made of high-quality metal material for maximum durability - Easy to install and use - CO2 refill adapter designed to fill CO2 into your Sodastream tank - Adjustable valve pin ensures compatibility with various cylinder valve types - Precision design with anti-corrosion and wear-resistant properties Specification: - Material: Metal - Internal Thread: TR21-4 - External Thread: W21.8-14 - Color: Black, Silver (optional) - Optional Type: #1: Black adapter with meter #2: Black adapter without meter #3: Silver adapter with meter #4: Silver adapter without meter - Name: Air Flow Meter - Connection type: Hose 8mm - Regulating valve: With valve - Body material: PMMA - Pressure: 0.1 MPa - Accuracy: 0.5% - Temperature range: 0–60°C - Float material: Agate ball - Gasket material: Silicone rubber - Height: 65 mm - Measurement range: 0.1–1.5 L Package list: 1 x CO2 Refill Adapter 1 Set x Wrench and Gasket Accessories