Features: 1Made of high quality metal material for maximum durability 2Easy to install and use 3CO2 refill adapter is used to fill CO2 into your Sodastream tank 4Adjustable valve pin ensures compatibility with any cylinder valve variation 5Precise design anticorrosion and wear resistance Specification: Features:Made of high quality metal material for maximum durability.Easy to install and use.CO2 refill adapter is used to fill CO2 into your Sodastream tank.Adjustable valve pin ensures compatibility with any cylinder valve variation.Precise design anti-corrosion and wear resistance.Specification:Material: MetalInternal Thread: TR21-4External Thread: W21.8-14Color: Black Silver (optional)Optional Type:#1: Black adapter with meter#2: Black adapter without meter#3: Silver adapter with meter#4: Silver adapter without meterName: Oxygen Air Flow MeterConnection type: hose 8mmRegulating valve: with valveBody material: PMMAPressure: 0.1MpaAccuracy: four degree0.5%Temperature: 0-60Float material: Agate ballGasket material: Silicon rubberHeight: 65mmMeasure range: 0.1-1.5LPackage list:1 * CO2 Refill Adapter1 Set * Wrench Gasket Accessories