Introduce young builders to the world of engineering. A simple yet essential 16-piece set from 1994.
Discover the Large Gear Wheels from the Technic collection - 16 pieces of building excellence.
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Mechanical Magic of LEGO Technic McLaren P1 42172 (7-Speed Gearbox)
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![Technic Gear 24 Tooth [Old Style - Three axle holes]](https://cdn.rebrickable.com/media/parts/ldraw/7/3648a.png)
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