This third party set represents very good value for money. Unfortunately, the pieces aren't exactly the same size as the actual LEGO gears - they all appear to be slightly larger than the actual LEGO pieces themselves. The end result is extra friction as these gears work in a LEGO creation. To be clear, these pieces technically match LEGO pieces, they just don't connect as smoothly (and the gears don't spin as smoothly when multiple gears are connected) as the real LEGO pieces. I'm giving this 3 stars because if you don't care about the extra friction this is great value for money. Definitely not 5 stars as I don't think it's really 'Big Brand Compatible' as the description claims.
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