Transparent design: The small wheel displays a translucent design, visually spacious and bright, it is easy for you to watch your pet play inside; durability that lasts for years and rotational stability.And the edges play circular will make it safer and more solid. Easy to use and install: The wheelless wheel can be mounted on a metal cage or acrylic cage for easy installation. Smooth and mute: The aerodynamic design reduces wind resistance, allowing the wheels to turn more smoothly.The edge of the cylinder is polished, smooth edges that will not hurt the animal’s feet. The bearing has a good mute effect and long lasting service life. Easy to clean: Washable all over the body, keep the wheel clean, increase the exercise frequency of animals to keep healthy. pet exercise, play with animals to relieve boredom. Safety Material Safety: Made of high quality material, non-toxic and tasteless, can use a long service life.It is healthy and harmless for your pets.A great place designed for