It fit right out of the box. No tools, no fasteners, ultimate simplicity.
It fits but there's nothing to hold it down so it could pop up and cause a spill. But that's the tradeoff between ultimate simplicity of installation and locked in so tight you can't remove it without fasteners and tools. It has a hole that I found a cup that fit right in that I can use to hold utensils.  It has a recessed cup holder that I also found a mug to fit although it is a small cup and not either one of my favorite larger mugs.
Rating: 4 stars