Different sizes, shapes, and colors of the blocks make an instant hit with your bird. The set is much more challenging to chew or destroy hours and hours with well-made quality. Wood Beads united in a sturdy chain, while the cage hanging clip is safe and will not injure furry friends. Entertaining enough to keep birds busy for a long period and they do enjoy playing with it. Our bird toys are meant to be destroyed by birds while providing tons of playful fun in the process. There would be no fun in a bird toy if it was unbreakable.