Product Description: 152 PCS STEM Preschool Building Set Kids begin to learn before they going to school, and some are very interested in building things. This educational building set for 3+ year old children is perfect gift for your little ones. No matter they want to play at home or school, spend their leisure time during traveling, or share with friends or siblings, this toy set is definitely an ideal choice. Key Features: - Various models to build for endless exploring fun - Have significant impact on children’ development in all perspectives - Interesting and easy to use tools - Heavy duty and sturdy accessories - Unique and creative gift for kids Specifications: Material: Environment-friendly ABS plastic Recommended Age: 3 year old and up Warm Tips: This product contains small parts and accessories, children shall use under adults supervision. The colors of accessories are shipped randomly. During assembly, if you come across missing color when referring to the step-by-step instructions, please replace with another different color of the same shape.