Features:1. Each joint can be rotated 360 degrees, you can arbitrarily create the direction of the water.2. Made of quality plastic, which is practical and durable.3. Wide use in aquarium, fish tank and pump.4. Four specifications to meet your different needs.5. They can make the water look like a tornado or waterfall.Specification:Condition: 100 percent Brand NewItem Type: Water Outlet TubeMaterial: PlasticWeight: Approx. 26.6-31.2gOptions: Small Duck Nozzle, Big Duck Nozzle, Small Tornado Nozzle, Big Tornado NozzleSizeLengthInside DiameterOutside DiameterMouth SizeSmall Duck Nozzle12mm or 0.5in20mm or 0.8in25mm or 1in29x9mm or 1.1x0.4inBig Duck Nozzle12mm or 0.5in16mm or 0.6in20mm or 0.8in29x9mm or 1.1x0.4inBig Tornado Nozzle12mm or 0.5in20mm or 0.8in25mm or 1in30mm or 1.2inSmall Tornado Nozzle12mm or 0.5in16mm or 0.6in20mm or 0.8in30mm or 1.2inPackage list:1 x Water Outlet Tube.