Poor design and wood expands so the screws never tighten.  If you try to tighten, the screws spin.  When you lift the screw comes right out of the wood.  The desk was wobbly and could not be tightened.  Couldn't even finish building it.  Had to take it apart and put it back in the box.  Actually screws fell out so was easy to disassemble. 

Pros: NONE
Cons: Not enough room for the cons - poor design, wood is cheap. Can't be tightened.  Highly disappointed.