uxcell Mini Hamster Fitness Exercise Fun Toy Ball Wheel Cage, White/Blue Product name : wheel cage; external material : plastic Main color : blue white; diameter : 6cm / 2. 4" Total size : 13x12. 5X8Cm/5. 1"X4. 9"X3. 1"(L*W*H) Weight : 181g Package content : 1 x wheel cage