2X(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 tank.
Adjustable valve pin ensures compatibility with any cylinder valve variation.
Precise design, anti-corrosion and wear resistance.

Specification:
Condition: 100% Brand New
Internal Thread: TR21-4
External Thread: W21.8-14
Name: Oxygen Meter
Connection type: hose 8mm
Regulating valve: with valve
Pressure: 0.1Mpa
Accuracy: four degree, 0.5%
Temperature: 0-60℃
Measure range: 0.1-1.5L
Material: Metal
colour: silver

Package Contents:
1 x CO2 Refill Adapter)