This thing is really good as a sweet spot, more solid and compact than a breadboard but less durable than soldering while I'm prototyping. The screws hold the cables securely in place, and I also appreciate how much they add to the Uno in terms of I/O. The cables come out at an angle which means you have to be strategic with your cable installation to allow access to the screws as they will be covered by the next layer of cable coming out of the connectors.
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