Product description
60 different kinds of parts and accessories in just one package, which makes it a perfect choice for laboratories, science education, DIY models, RC-airplanehelicopter repair, etc.
This item is for toys gear spare parts package, mainly for 0.5 modulus of each gear for DIY toys with use.
Our product includes gear, rack, pulleys, belts, and other transmission parts, and all the display pictures were taken in kind.
Do DIY science and small production, product design, mechanical model
100% Satisfaction Guaranteed: If you are not satisfied for any reason, please let us know immediately, we will serve for you till you satisfied 100%!