Super Silent 8.66-Inch Hamster Wheel: This super silent hamster wheel is suitable for a variety of small animals. The inner diameter is 8.66 inches (22 cm) and the runway width is 3.35 inches (8.5 cm). It is recommended for Dwarf Hamsters, Gerbils, Mice, Lemmings, Degus, and other similar small pets. The appropriately sized running drum and wide running track provide a comfortable back position, so your pet can run without bending its back. It brings endless running fun to your hamster while maintaining super silence. Before purchasing, please ensure that your cage or tank has enough space to accommodate the wheel New Premium Bearings: Our exercise wheel features high-precision bearings that ensure smooth, quiet, and durable performance. These advanced bearings help reduce noise and enhance the wheel's stability, providing a better exercise experience for your pet Pet Safety and Anti-Bite: Non-slip ridges on the runway increase friction and prevent small pets from slipping due to inertia while exercising. The soft surface of the runway is textured and delicate to the touch, providing a comfortable experience for your pet while running. Smooth edges won't hurt your pet Adjustable Height & Easy Installation: The height can be easily adjusted between 9.5" (24 cm) and 12.3" (33 cm) to match the height of your cage or bedding, ensuring perfect adaptability for different types of hamsters and setups. With a wide and stable base, it can be securely placed on platforms or other surfaces. Installation is a breeze—simply tighten the components without any complex procedures, allowing you to quickly create an ideal exercise and entertainment space for your pet Durable and Decorative: Made of safe and high-quality ABS (running tray) , this wheel is chew-resistant. Its sturdy design provides reliable support when running or walking. Available in multiple colors to bring freshness to your pet's living environment Upgraded Base Design: The base features a one-piece molding with curved corners, providing added thickness and making it more stable and durable. Measuring 4.5" (11.5 cm) by 7.4" (18.8 cm) in size, the base is designed to be robust and not easily broken, ensuring long-lasting performance This 8.66-inch (22 cm) super silent hamster wheel is perfect for small pets like Dwarf Hamsters, Gerbils, Mice, Rats, and more. It features a spacious running track (3.35 inches / 8.5 cm wide) that allows pets to run comfortably without bending their backs. The wheel is equipped with premium bearings for smooth, quiet performance and has non-slip ridges to prevent slipping. The adjustable height (9.5-12.3 inches / 24-33 cm) ensures it fits well in various cages. Made from durable ABS material, it’s chew-resistant and available in multiple colors. The upgraded base design (4.5 x 7.4 inches / 11.5 x 18.8 cm) is stable and long-lasting. Easy to install and a great addition to your pet’s environment.