Features: STEM Learning Fun: This Kids DIY Racing Track Car Toy encourages hands-on STEM learning, allowing children to build their own aluminum racing car while developing problem-solving and engineering skills. Perfect for boys and girls aged 3 and up. High-Quality Alloy Construction: The DIY Alloy Race Car Track Set features durable aluminum parts, ensuring long-lasting playtime. Kids can assemble and customize their own gravity-powered sliding vehicle for endless racing excitement. .