About This 【High-Quality Durable Construction】Crafted from premium transparent ABS material, this hamster wheel is non-toxic and odor-free. It boasts rounded edges to maximize safety and ensure reliable stability. 【Quiet Ball-Bearing Mechanism】Equipped with integrated ball bearings, it operates smoothly and silently—creating a calm living space for both you and your small pet. 【Safe Seamless Running Surface】The seamless track design eliminates the risk of foot or tail pinching. Anti-slip processing enhances traction for steady, secure movement. 【Sturdy Adjustable Base】Featuring an adjustable base for versatile use, please confirm your cage or tank has sufficient space prior to purchase. 【Comfortable Running Experience】With an optimal drum size and wide track, it allows hamsters to run comfortably. This supports healthy muscle growth and overall mental health. Overview Product Dimensions : 6.5"L x 2.9"W x 6.5"H Breed Recommendation : All Breed Sizes Specific Uses For Product : Running Recommended Uses For Product : Indoor Material : Acrylonitrile Butadiene Styrene (ABS)