• plastic
• Gear package parts--the set includes multiple kinds of gear and car wheel to meet your different needs,mechanical model gear motor
• Mechanical model gear motor--the set is made of plastic material, and has ,gear package parts
• Toy car gear spindle--great for DIY science and small production, product design and mechanical model,gear package parts
• It is stable and has great performance while using
• Lightweight, easy to carry and use