& OOTDTY Features:1. It can be used to adjust the gas volume on DIY equipment.2. It can be used to adjust the gas output on the cylinder and disposable carbon dioxide equipment.3. It can be connected in series with the natural delicate tuning valve of the CO2 generator, to increase the accuracy of the adjustment, it can also be used as a switch directly. Note: It is difficult to adjust the amount of air from large to small because the air pressure takes time to pass through the hose, which is relatively boring. Tighten the trim valve first, then stop the air outlet, then open the trim valve slowly. It's much easier to fine-tune. Material: PlasticColor: WhiteSize: As Pictures Show Connect: Outer Tube+6mm Quantity: 1 PcNote: 1. Please allow 1-3cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included(Without Retail Package):1 x CO2 Generator Regulator