General description The 6.8-inch Parrot Silent Running Wheel is designed for small animals such as birds, parrots, turtles, and hamsters. Its thoughtful design ensures that your pet won't get its tail stuck while providing a fun and active way to exercise. Technical specifications Diameter: 6.8 inches Material: Durable steel bearings Installation Can be installed on the side of the bird cage Easy to disassemble for cleaning Usage Promotes physical activity and mental stimulation for birds, parrots, hamsters, mice, and hedgehogs Ideal for training and entertaining small animals