Bucatstate Super-silent Dual-Bearing Hamster Exercise Wheel with Adjustable Base Size: 17cm&21cm Equipped with an adjustable base suitable for small animals such as dwarf hamsters, Syrian hamsters, gerbils, hedgehogs, etc Features: Super silent M gentle slope Dynamic shining Adjustable base Comfortable foot feel Perfect cage decoration Bucatstate has been specializing in small pet cages and accessories for years. Please feel free to contact us if you got any problem. Support no reason to return within 30 days.

100% SATISFACTION GUARANTEE-- we strongly stand behind the great craftsmanship of pet supplies and provide the best customer experience possible. In case anything goes wrong, we will respond to your concerns within 24 hours. Order now!. Safety & Easy to Use -- The gentle slope running wheel can buffer and slow down, also the running track is continuous without cracks or tripping problems, avoiding being thrown away and reducing the risk of fur/tail entanglement, pet wrap-a-round, the curvature of the spine, and other injuries. Super Silent Hamster Exercise Wheel-- designed with dual ball bearings to ensure the wheel glides smooth and silent. Enriches their activity at night & let them enjoy endless running fun. Also brings hamster owner a quiet & premium sleep. Adjustable Height and Solid Base -- The variable height of quiet hamster wheel is between 22-34cm very stable and durable, you can adjust it according to the height of the hamster cage. Come with a cage attachment helps it can be installed onto the cage directly. Hamster Running Wheels 21cm - Consists of a diameter of the 21cm running drum & a wide standing base, the running track of the hamster wheel is around 8cm width, it's recommended for Dwarf Hamsters, Golden Bear, Gerbils, Mice, etc.