[ metal materials]: The bearings are made of metal materials, which have good noiseless effect, long service life, strong, lightweight, non-toxic, heat-resistant. wear and bite[Stable and Safe]: The aerodynamic design reduces wind resistance and makes the wheels run smoother. Smooth edges will not hurt your pet's feet. Convenient and safe[Silent Running Wheel]: Super quiet, hamsters play at night, do not affect the owner's sleep, encourage healthy exercise. At the same time with nail polish, polish excess nails while playing [Easy to clean]: Detachable bracket and wheel design make it easy to disassemble and clean. Increase the frequency of pet exercises to maintain health. Non-slip design, not easy to get stuck[Easy to install]: It can be installed on a metal cage or an acrylic cage, easy to install, and the speed is stable. The round edge sleeve will make it stronger, stable and durableFeature:All metal, durable and anti-bite, strong fulcrum support, axis not easy to shortenThe all-metal design prevents animals from biting. Used with nail polish, small pet nails while playingSilent bearing design allows your pets to play confidently without affecting the owner's rest and lifeThe stand design, one thing for two purposes, can be used directly in the cage, or can be hung on the cage for useSpecification:Product Name: Metal Silent Running WheelDiameter of the rolling wheel: 23cmRace wheel width: 9cmTotal width of racing wheel: 12cmDistance between the racing wheel and the support: 3cmProducts from LUOLV's store Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.