[Hermit Crab Climbing Toys]Hermit crabs are naturally active creatures and daily exercise is vital to keeping them happy and healthy. The Hermit Crab Runner enrich their and activities and give them plenty of exercise. [Silent Toy]The hermit crab exercise wheel is designed with high quality steel bearing to no noise when in use, say goodbye to annoying squeaks and noises! Let your pet enjoy the fun of exercising without interrupting your rest or work. [Anti-Skid]The wheel has anti-slip to increase friction, effectively reducing inertial falls while running and making it easy for hermit crabs to climb. [Perfect Size]This small animal wheel toy is 3.34 inches/8.5 cm in height and the wheel diameter is 5 inches/12.7 cm. Suitable for wide variety of small animals, such as hermit crabs, hamsters, gerbils, chipmunks, ferrets, hedgehogs and more. [ Material]This hermit crab climbing toy is made of high quality plastic and steel, wear-, bite- and long-lasting. Color: Black & Gray Material: plastic Plate size: 12.7cm Package Contents: 1 x Hermit Crab Exercise Wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.