Essential details
MOQ:10
Shipping:Express Delivery
Product Introduction
This product has two tracks, one lane change in the middle, five sets of gear linkage, equipped with second-order upper ball, wooden mortise and tenon process physical assembly, no glue, wearing parts have spare parts, including 2 No. 5 batteries, assembly tools and 5 steel balls
Theroy: 1,Gear drive;
2,Electrical energy is converted into kinetic energy;
3,potential energy into kinetic energy; Suitable for children over 8 years old to assemble.
