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. Gravity-Powered Action: The Gravity Inertia Powered Sliding Vehicle requires no batteries, using natural forces to race down the track. A fun and eco-friendly way to teach kids about physics and motion. Creative DIY Experience: The Children's Alloy Race Car DIY Kit lets young builders design and assemble their own race car, fostering creativity and fine motor skills. An engaging gift for birthdays and festivals. Safe And Educational: This STEM Learning Race Car DIY Building Toy is designed for kids aged 3+, with smooth edges and non-toxic materials. A perfect blend of education and entertainment for young minds. Specification: Material: Plastic+Alloy Size: Track: 390*8cm Car: 7cm Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Include: 1*Track 4*Car 4*Connector 8*Suction Cup