Features: 1. Upgraded design: The air pump shunt is made of high quality stainless steel, the air does not leak, and it is durable. 2.Adjustable shunt: multi-head adjustable air volume 0-100%, unobstructed, aquarium farming is more convenient. 3. Multi-purpose: It can be used in aquarium, fish tank, aquaculture, etc. 4.Simple operation: the splitter link the air pump tube, manually controls the flow of important O2 or turns the air pump on or off. 5.The outlet diameter is 4mm and the inlet diameter is 8mm, which is suitable for most oxygen pumps. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specifications: Name: Air Pump Shunt Style: 2 connector/4 connector/6 connector/8 connector/10 connector/12 connector Dimensions:Air inlet:about 8mm/0.31in Air outlet:about 4mm/0.16in Material:Stainless steel includes:1x Air Pump Shunt