Quantity: one piece Material: stainless steel Color: silver Type: 6 heads Dimensions: 11.5 x 3.3 cm Inlet pipe for pipes with an inner diameter of 8 mm Outlet pipe for pipes with an inner diameter of 4 mm Material: this separator air for aquarium is made of high quality stainless steel, with smooth surface, strong and durable, and has a long service life. Technical data: Inlet diameter: 8 mm - Outlet diameter: 4mm. Overall dimensions : 115 x 33mm. Suitable for 4mm air pump outlet or trachea. 6-way air valve: Each air valve can be adjusted independently. You can connect the air flow control valve to one side or both sides. Easy to use: the air distributor connects to the hose of the air pump, manually controls the flow of the air valves. important air or turns the air pump on or off. Widely used: suitable for all aquariums, such as aquariums, heavy duty professional water pumps, commercial air pumps, etc.