Quality of the kit is comparable to the best in the world. Each item is precisely cut and fits in perfectly. My kids (13 and 8) were able to assemble it with very little support. Excellent learning aid for the kids demonstrates very clearly the principles of hydraulic movements Allows 3 different movements - (i) Circular (ii) Up and down and (iii) Open/Close
Thanks for making a excellent educational kit I recommend this kit for ages above 8.