Product description Type: 2 heads, 4 heads, 6 heads Size: 2 heads: 40*60mm 4 heads: 75*60mm 6 heads: 115*60mm Color: silver Material: Stainless steel Package content: 1pcs oxygen pump air volume regulating valve 1. Easy to use Our stainless steel aquarium air pump accessories are equipped with a flow control valve that precisely adjusts the air flow and is easy to use. 2. Shunt Gas Accessories for oxygen ventilation pumps, can be used for shunt gas. The flow can be controlled manually. Fit for all aquariums, such as fish tanks, heavy professional, commercial air pumps and so on. 3. Multiple choice This stainless steel air control valve is available in several versions (2-way / 4-way / 6-way) that you can select according to your actual needs. 4. Good quality This aquarium airflow divider is made of high quality stainless steel, smooth surface, durable and sturdy, long service life. 5. Widely used This aquarium air diffuser is used for aquarium and aquaculture applications. Air lever valve can be connected to the aquarium hose.