8 Outputs allow you to adjust the air flow for 8 aquariums Input connector diameter: 10 mm and the output diameter 8 measures 5 mm. Manually control the vital oxygen flow or turn on or off an air pump. Made of chromed copper, the Air never escapes. Not suitable for the CO2 system. weighs 0.2 kg, measuring 16 x 6 x 0.5 cm 8-way chrome collector Levers Controlling the 8-way airflow can both control and divide the air flow into several branches, allowing you to feed more air-driven equipment such as air stones and sponge filters. The metal dispenser is an essential accessory for use in the aquarium, culture and pond, particularly in freshwater. Air inlet for 5 mm flexible, air outlet for 5 mm flexible Not suitable for the CO2 system Rugged stall Made of durable chrome copper material. l Air will never escape and provide a good and uniform air circulation. The stop levers rotate easily and remain in place. Separate control valves < / p> Each output has individual control valves. The