Features: - Solid running surface for better grip. - Provide sports wheels for small animals to promote production and digestion. - With fine workmanship, the surface is safe and comfortable to climb. Great for hamster, mouse and other small furry animals. - Keeping quiet while the pet is exercising which does not affect the pet's fragile hearing, nor does it cause distraction to the owner. - Highly recommended for dwarf hamsters, small gerbil, mice, and other similar-sized pets, fits for them when run without bending their backs. 【Mini Size for Your Pets】 This is S size for small furry animals, about 6.1x3.74x7 inch(15.5x9.5x18 cm), 6.1 inch(15.5 cm) diameter drum wheel, with 1.97 inch(5 cm) track wide. Highly recommended for dwarf hamsters, small gerbil, mice, and other similar-sized pets, fits for them when run without bending their backs. 【Safe & Chew Out Material】Made of high quality wood, which are durable and safe chew out. It not only serves as exercise toy preferred for small pet sports activities but also as chew toy, offers excellent pet teeth grinding effects. 【Completely Noiseless】 Designed by wooden with a very low noise level (around 40dB) and dual ball bearings, so can quiet keep it on spinning smoothly, even your little friends working out on the hamster exercise wheel in the night time, you still have a sweet sleep. 【Reliable&Stable Support】 The non-tipping stand gives this wheel a firm stand, widened and thickened wood base greatly avoids reversal through providing reliable and stable mount for the exercise wheel. 【Must-have Hamster Cage Accessories 】 Helps your hamster exercise more and develop balance ability and agility. Your furry critter will love this hamster wheel toy as Hamsters love the hamster rolling wheel like a runner to help them to broken boredom & enrich their nighttime, also keep them to exercise for maintaining their strength and well-being. Specifications: Material: Wood Size: LxWxH: 6.1x3.74x7inch / 15.5x9.5x18cm Wheel diameter: 5.9inch / 15cm Wheel external width: 2.36inch / 6cm Wheel inner width: 1.97inch / 5cm