This spinning top is powered by air that you can blow with a standard 5mm drinking straw through the body of the spinning top.
The more you blow the faster the spinning top will rotate.
You can compete with your friends with several spinning tops who will have the longest run.
There is an optional rod available you can insert in the upper hole to start the spinning top with your fingers.
you can find the rod by clicking the following link:
In strong & flexible plastic the spinning top runs really good.
I also tried it in steel but with this material the tolerances seem bigger and I had to drill the inlet bigger to be able to insert the straw.
You also need a lot of air pressure to drive the spinning top because of the weight.
In both materials tested until now you have to remove powder rests from the inside prior to playing with it.