Acrylic toys are a strong alternative to wooden toys, that Parrots love. Acrylic is a very strong and non-toxic carbon/polymer mix. The best designed toys are those that have moving parts and encourage your birds to be creative. These toys are designed with the knowledge we have of how a Parrot thinks and what stimulates them.This wheel will screw to the side of the cage, to hide a treat in.Small - approx 10cm diameter - suitable for small to medium birds