This Dinosaur Museum Series T-Rex Transformable Robot Building Set consists of 616 high-precision small bricksAccurately recreates the classic appearance of Tyrannosaurus Rex including massive head, sharp teeth and powerful physique Unique dual-mode transformation design allows free conversion between T-Rex form and cool robot form Multiple articulated joints enable the assembled model to pose in various dynamic positions Made from premium eco-friendly ABS material, safe non-toxic and odor-free with smooth edges and no burrs Assembly process effectively develops children& 39;s hands-on skills, logical thinking and spatial imagination Completed model serves as an exquisite collectible display, ideal for dinosaur enthusiasts and building block collectors Also available in multiple dinosaur options including Triceratops, Brachiosaurus, Stegosaurus, Velociraptor and Pterosaur Forms a complete Dinosaur Museum collection series to satisfy different children& 39;s preferences and collecting needs