Jurassic Dinos approximately measure 4" x 2" and are 3/4" thick. Can be drilled with a 5/16" hole which is great to string on Superior Poly Rope and 1.6mm chain or a 1/2" drilled hole. Package of 13 assorted Jurassic Dinos Jurassic Dinos Soft Plastic Bird Toy parts are ideal for African Greys, Amazon Parrots, Eclectus Parrots, Pionus Parrots, Cockatoos, Macaws and all similar size birds.