What can go wrong with 5 terminal blocks including crimp connectors for less than $10? I used them to connect 6 short LED strips in a project I was building. I used crimp connectors and short wires to create a "bus" on one side and connect the wires to the other side. Everything worked fine except when I overtightened a screw and snapped a connector (hence 4 stars instead of 5). Overall this is a huge time saver for me, I will be using it again.