This versatile CO2 accessory is suitable for replacing worn-out bottle caps or upgrading your existing CO2 system. Its multipurpose functionality makes it a valuable tool for maintaining optimal conditions in your aquarium. The cap is designed to be portable and easy to handle, ensuring easy use. Features -Color:Beige -Material:ABS -Size:3.30X3.30X3.00cm/1.30X1.30X1.18in -Gas retention excellence CO2 generator bottle cap: designed to minimize co2 loss, ensuring maximum efficiency and prolonged usage for your diy co2 generator -Quick and simple setup CO2 generator bottle cap: features an intuitive design for fast installation, saving time and effort during assembly -High-pressure durability CO2 generator bottle cap: constructed to withstand high-pressure conditions, ensuring the safety and reliability of your co2 system -Long-term reliability CO2 generator bottle cap: made from materials to provide consistent performance over time, reducing the need for replacements -Aquarium-friendly design: suitable for use in aquarium co2 systems, helping to maintain healthy plant growth Package list: 8 x CO2 generator bottle cap