Hamster Wheel Accessories: Hamster wheel bearings are well designed and run smoothly, providing a happy fitness environment for hamsters. Durable Material: The Silent wheel bearing is made of high quality material, durable and strong, which can bear the weight of the hamster and ensure safe operation. Silent: Small animals fitness wheel bearing, mute, will not make noise and will not disturb you and your pets' rest. Stable: The high precision of the Exercise wheel bearing axis makes the hamster wheel run more smoothly, reduces friction and extends the service life of the product. Easy to Install: Hamster silent bearing is suitable for 2mm diameter steel wire and can be installed on hamster cages, steel brackets or other plastic brackets. Size Chart: width 3.8cm/1.50inch Package Includes: 1Hamster WheelBearing(2 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.