Creative Connectable Design: The building blocks are designed with a unique connectable feature, allowing kids to easily assemble and disassemble the American truck head and container trailer model. This encourages creativity and problem-solving skills as children explore different configurations. DIY Toys for Kids: These building blocks are perfect for DIY enthusiasts, offering endless possibilities for customization and modification. Kids can use their imagination to create their own unique truck designs, fostering creativity and innovation. Safe and Durable: The container trailer model bricks are designed with safety in mind. They are free from sharp edges and small parts that could pose choking hazards. The sturdy construction ensures that the models can withstand repeated play, making them a long-lasting toy option. Specifications: Box Size:27*8*24CM/10.63*3.15*9.45in Product Material: Eco-friendly ABS plastic Blocks pcs: About 421PCS Packing content: Building Blocks and detailed instructions Reminder: Size may be 2 cm / 1inch inaccuracy due to hand measure Contains small parts, please do not swallow them in the mouth, not intended children under 3 years.