#1 Recommended wheel for sugar gliders by owners and breeders. Wheels are made in the USA. The Freedom Wheel is a 1 piece design for easy cleaning, smoother travel, and quieter running than any other exercise wheel on the market. All Freedom wheels come with dual, high quality, sealed carbon steel bearings for long lasting and silent movement. All Wheels are 13 inches in diameter and 5/1/2 inches wide which makes us the largest small animal wheel on the market. It is also only 2 lbs so its light enough to hang on any cage without causing any damage to your cage.