Eitech metal construction toys - gears and more

I really like the Eitech construction toy building sets. I haven't built one of their models, but I have purchased bundles of parts such as gears, axles, and sprockets for use in prototyping various mechanisms.

They aren't exactly cheap, but they will stand up to a lot of use and reuse. Many of the parts are metal. Some of the plastic parts have metal reinforcements. The system offers a wide assortment of mechanical components, metal structural pieces, and motors to animate your projects.

Here is Amazon's selection of Eitech Building Sets.

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