The stand is designed for a fake christmas tree with a 5mm thick “trunk”. The hole in the stand is 6mm to make it easier to insert the tree.
The three legs are joined to the middle using dove-tails and can therefore be removed for easy storage.
I probably designed it a little too sturdy, but i don't think that that is a bad thing. At the same time it is an easy and fast print due to the lightweight and thin framework.