Small Animal Wooden Smooth Exercise Wheel With Mouse Stand Hamsters S : Made of high-quality wood material, eco-friendly and ensuring the safety of your pet Helps your hamster exercise more and develop agility Widened and thickened wooden base provides reliable and stable attachment of the exercise wheel It is not used for exercise preferred during sports activities for small animals, but also is a nice decoration Wooden wheel is noiseless, animals play with this wheel, you will not be disturbed Specification: Material: wood sizes: T: outer diameter 15 cm/5.9 inch, inner diameter 14.4 cm/5.67 inch, base width 9 cm/3.54 inch, total height 17.5 cm/6.89 inch, outer wheel width 6 cm/2.36 inch, inner width 5.3 cm/2.09 inch; M: outer diameter 21 cm/8.27 inch, inner diameter 19.2 cm/7.56 inch, base width 12 cm/4.72 inch, total height 23.5 cm/9.25 inch, outer wheel width 8 cm/3.15 inch, inner width 7.2 cm/2.83 inch; L: outer diameter 29 cm/11.42 inch, inner diameter 28 cm/11 inch, base width 14 cm/5.5 inch, total height 32 cm/12.6 inch, outer width of the wheel 9.5 cm/3.74 inch, inner width 8.6 cm/3.39 inch; contains: 1 exercise wheel for small animals 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.