NEXT GEEKDIY Science Project Dc Motor Kit with Gear Pulley Set, Solar Energy, Windmill,Buzzer, DIY Car Robot etc STEM Activities Electronic Kit for Kids

NEXT GEEK DIY Science Project Dc Motor Kit with Gear Pulley Set, Solar Energy, Windmill,Buzzer, DIY Car Robot etc STEM Activities Electronic Kit for Kids

Electronic Spices 78 PCS Plastic Gear Set Rack Pulley Belt Worm Single Double Gears DIY Car Robot for electronic and school projects (WHITE, 78)

Electronic Spices DC Motor Mini Electric Carbon Brush High Speed Torque Electric Toy Cars Engine Motor Kit, for DIY Fan Models- PACK OF 5, Iron