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Just got it today, runs fast and is good quality, would recommend to a science teacher or any one is into this sort of thing, don’t run it for long periods of time because it might break the glass on the piston, but you do get 2 spares in case you do break one, lots of fun and good instructions. On a side note I would like to know what the extra parts on the box were ( fan, gears, rubber bands) for. Thx 10/10
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New