BurnurMini Motor Kit for Kids, Electric Motor Kit with Plastic Gears, Shaft Propeller, Mini Engine Build Kit for DIY STEM Engineering Toy Science Project

Mini Motor Kit for Kids, Electric Motor Kit with Plastic Gears, Shaft Propeller, Mini Engine Build Kit for DIY STEM Engineering Toy Science Project

EUDAX 82 pcs Plastic Gear Package Kit DIY Gear Assortment accessories set for Toy Motor Car Robot Various Gear Axle Belt Bushings

18 Set DC Motors Kit, Mini Electric Hobby Motor 3V -12V 25000 RPM Strong Magnetic with Shaft Propeller, 2 x AA Battery Holder,9V Battery Clip Connector,Plastic Wheels for DIY Science Projects