Electric DC TT Motors Kit Plastic Gears AA Battery Holder Case with Mini RC Motor 1.5-3V 15000RPM Electronic Wire Shaft Propeller 9V Battery Clip and Rocker Switch for DIY Science Projects

Le sirvió a mi hijo para su proyecto de la escuela

los buscaba para un proyecto de ciencia y funciono muy bien.

very useful, my son built a little Robot and used this kit, very helpful

Fun hobbiest set

Using to restore holiday train

Good

If you like playing with small electric motors. This package along with the included battery holder packs is a screaming deal!!

Wished it would have came with more places and maybe even some instructions or ideas on how to make different projects the motors that came along with it and saying to work fine they're not the most powerful motors in the world but they're simple enough to make little small projects or to replace a bad motor in a toy or something. The wire gauges are probably 24 maybe even 26 gauge so they're very fragile there is no way to actually pick up the gears and pullies, to make a project with your kids. But you can make a fan or windmill and probably could even make a couple of other smaller projects but you'll have to come up with those ideas on your own where there is no instructions on how to make any of this.