Super Pet Silent Spinner Wheel Giant is the wonderful whisper quiet workout wheel for pet rats and chinchillas. These wheels contain Patented ball bearing technology makes them super silent. Super Pet Silent Spinners work two ways: free standing or attach directly to any wire cage.Features: High quality plastic running surface is safe and comfortable for your furry friend's feet Specially designed for quiet spinning Encourage healthy exercise 30.5cm diameter wheel is ideal for Chinchillas pet rats or other small animalsPlease note this item comes in a different colours and unfortunately we cannot allow a choice of colour on this product.