I recall it being 300 pieces for the Stegosaurus and 88 pieces for the mini Triceratops, but when I counted, there were 455 pieces plus 2 sets of tires. (Please forgive me if I made any counting errors.) It's possible that pieces from other kits were mixed in, or perhaps there aren't enough pieces to build the dinosaurs. Please rest assured that there are 2 sets of tires for the eye parts. The instruction booklet has some folds from storage, so please check it. I did not rebuild it multiple times, so the actual usage is minimal. Please understand the above information and that this is a used item before purchasing. The box is not included. I am also selling another item. I will offer a discount if you purchase them together.