1、DIY CO2 generator, easy to set up. 2、Comes with CO2 tube for smooth producing, easy to fold up. 3、Comes with pressure gauge to control the volume of the CO 4、Easy to operate and designed for low cost planted tank use, to provide your aquarium plants an abundant CO2 environment for better growing. 5、100% brand new and high quality. Features: DIY CO2 generator, easy to set up. Comes with CO2 tube for smooth producing, easy to fold up. Comes with pressure gauge to control the volume of the CO 2. Easy to operate and designed for low cost planted tank use, to provide your aquarium plants an abundant CO2 environment for better growing. 100% brand new and high quality. Specification: Material: Plastic Color: White Length of tube: Approx. 166cm / 65.35'' Package list: 1 * Pressure gauge 1 * Tube 1 * User manual Notice: Please read the user manual carefully before using this product. The bottle must be carbonated beverage bottle, do not use pulpy, green tea, mineral water bottles Trimming valve regulation avoid by sudden big or small, can't suddenly turn up, after immediately shut down again, so as not to cause abnormal pressure to the bottle.