SpecificationName 12 16 16 22 600 Stainless SteelLily Pipe for Aquarium Fish Tank Filter Inflow OutflowMaterial Stainless steelColor SilverPipe Diameter 12mm 16mm Features1 Suitable for most of size fish tank 2 Made of stainless steel material durable and solid construction 3 Outflow pipe designed to produce suitable water current in the aquarium 4 Inflow pipe designed to transport the water from the aquarium to the external canister filter and its top with build in water surface skimmer to remove the oil residue for your tank 5 Stabilize the inlet and outlet pipes on the side of fish tank with the use of acrylic clip easily 6 Keep the aquarium creatures have a fresh and healthy environment Package included 1 Pcs Outflow pipe 1 Pcs Inflow pipe 1 Pcs Clip