Click here to see video of Cockatoos playing with Lucky Bird Indestructabells Your bird loves bells but you’re tired of buying them! The Lucky Bird Indestructabell offers long term protection from the actual bell. Holes on the bottom of the plastic base allow the bird to hear the bell but not rip out the clangor. Blue color blends well with any cage decor. Dimensions: Large 6" Tall x 5" Diam. Small4" Tall x 3" Diam. Constructed from the same materials used to make bullet proof glass! 2 sizes to make all your birds happy AVAILABLE SIZES LISTED