For optimized CO2 refilling, this adapter uses an innovative approach. Prior to inflation, place the cylinder in the fridge freezer for a full 24 hours. During inflation, angle the cylinder to a 45-degree angle, ensuring efficient CO2 charging by following the provided instructions. This step significantly improves the inflation effect and maximizes the use of your cylinder. This model is perfect for large CO2 tanks. It's Perfect for Terra, Art, Duo, E-Terra, E-Duo, and models. Utilize this adapter to connect your CO2 system to a larger, storage tank for rapid charging of your pink CO2 cylinders. Our CO2 cylinder adapter is equipped with a pressure gauge for easy monitoring. This unique feature allows for clear display of pressure values, ensuring safe and effective refilling. Specifically designed for 60L pink CO2 cylinders, this adapter is meant to refill smaller CO2 tanks from larger ones. Our adapter is of superior quality, made of High-quality materials. These materials have been polished and electroplated to provide excellent corrosion resistance, ensuring of your adapter. To secure adapter sealing, we've included three additional O-ring rubber rings that can be replaced easily, limiting the chances of leaks and rust. type: W21.8-14 Material: Metal colour: As Shown Package Contents: 1 x CO2 Quick Refilling Adapter 3 x O-ring rubber rings Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin