A must have for every science freak.

Wobbles a lot

very very good

Never buy it.

I bought this product to help my child learn about gyroscope n impact of gravity etc. The product is made of solid steel n hence its durable. Would last a generation. But there is one hitch. The vertical bar keeps coming out of the hinges if uneven force is applied while pulling the string. This spoils the entire show. So while I have been able to give a good spin to it but every time I gave my 5 yr old son to spin it ...he made the bar come out as he would apply uneven force which would make...

This is a great product. I tried oiling it .it works better after oiling