Adjustable Height and Sturdy Base | The adjustable height design makes it easy and enjoyable for every little animal to start running. This silent hamster wheel also comes with a cage attachment to make room when space is running low. You have the flexibility to use bases or accessories anywhere Sizing | This candy-colored large hamster wheel is designed for hamsters, gerbils, mice, rats and other similar small animals. Size: 8" (20cm) diameter so they don't launch in the air when they want to stop Ideal Hamster Accessory | This candy hamster wheel with stand and cage attachment is a 1:1 reproduction of candy colors and is super cute. The super cute pinwheel appearance will make your beloved pet feel like you are in a fairy tale world TECHNOLOGY INTEGRATED | A hamster toy must-have, this dwarf and Syrian hamster wheel has a high-tech rational design - four slits enhance ventilation, which means a steady stream of wind keeps your hamster running and moving. help them calm down Ultra-quiet design | Using Japanese high-quality bearings, even if the wheels of large and small hamsters rotate at high speed, it can ensure quiet and no shaking at night What's more, the raised grooves ensure friction for pets as they run, allowing them to turn the wheels with ease Color name: blue, pink Hamsters can run 20 kilometers a night in the wild, and they can run very fast. To unleash the hamster's energy, we introduced the running wheel.