Product Description Features: *100% brand new and high quality! *U-type pipe can change the channel direction. *The product can be connected, you can make more modeling channels. *Suitable for hamster, golden bear and other pet toys. *The pipeline has a vent, allowing them to breathe freely inside, does not affect them play playful! Material :Plastic Size :Diam 5.5cm Color :White/pink/blue/yellow Packing: 1 Set Hamster External Pipe NOTE 1.Please allow slight deviation for the measurement. 2.Due to the light and screen difference, the item's color may be slightly different from the pictures,thanks for understanding.