Features: brand new and high quality Pipe Building Block: Equipped with different shape pipe pieces and wheels, help kids to build basic shape recognition, stimulate their space imagination and building skills. Selected Qualification Material: Made of qualified plastic, smooth edges as well as wear-resistant, non-toxic soft color painted and safe friendly to your kids. Sensory Stimulation STEM Toy: Multiple pipe joints puzzle block with easy plug connections, support multifunctional method to for play, free combination building, well stimulate children's desire to explore, the concept of teaching in fun to attract kids' concentration, stimulate their logical thinking and for creative skills,exercise and improve their hand & eye coordination. Educational Block Toy: Humanization connection of each piece,easy to plug in, worry free of hurt of baby's little hands, with great for creative educational training for kids, improve their abilities of hand-on ability, stimulate their problem solving skills and further right brain development. for Ideal Gift for Kids: Suitable for kids as birthday gifts, Christmas gifts, and encourage them free to explore their small world and improve their for creative imagination & building skills. Specifications: Material: Plastic Net Weight: approx. A 380g/0.83 lbs, B 840g/1.85 lbs, C 1120g/2.47 lbs Style Option: A(52Pieces)/B(104Pieces)/C(152Pieces) Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Pipe Building Block Toy