This small-scale model of T-Rex, the king of the dinosaurs, is a great learning toy. You can assemble the 3D dino puzzle and study the body parts of a dinosaur. The 4D Puzzle T-Rex Dinosaur comes with 23 museum quality pieces. The finished T-Rex is 3 inches long . The puzzle pieces of the 4D Puzzle T-Rex Dinosaur are hand- painted. This dinosaur puzzle for kids will be a great party favor or small gift for young dino lovers.