This Up Aqua CO2 Air Tubing is a 1 meter continuous length of tubing, perfect for connecting your CO2 regulator to your aquarium. The tubing is made of a durable, flexible material that won't easily crack or break, and it is designed to provide an airtight seal between your CO2 regulator and aquarium. The tubing's 1 meter length is long enough to reach any aquarium, and its continuous length allows you to cut it as needed for custom applications. The Up Aqua CO2 Air Tubing is a great choice for aquariums of all sizes.