This is my lego technic set that my parents brought me on 31/1/18. It has some really cool features and some new lego pieces that I have never seen before.
Once you have finished the overall product, it looks absolutely stunning, it is packed with lego and mechanical features. Also, this is a 2in1 lego set which means that you can build 2 different models but you can only use the same pieces.
The hardest steps that I think challenged me were steps 28-36, it was very puzzling when you had to put the drum in the hole. This lego set is very advanced with many features.
I would reccomend this to kids aged 10-11 because it is very technical in some stages of the building so if you really want a challenge, I suggest you get this awesome Lego set. You can buy it on Amazon here.
Check out my video of the Lego Technic Ultralight Helicopter: