Description138Pcs DIY Changeable Race Car Assembled TracksRechargeable :No need for batteries, simply recharge the car sets with a USB cable.*Anti-Gravity Magnetic Assembly :The cars are designed to float above the track due to magnetic force, providing a unique and fun experience for kids.• Flexible Railway Toys Kit :The track can be adjusted and customized to create different shapes and layouts, allowing for endless hours of creative play.• Diecast Material :Made with durable diecast material, ensuring the cars and track are built to last