Review on RKURCK Waterproof Inverter Trolling Protection by Thimothy Purnell

This circuit breaker was installed to protect the wiring from the battery. It is installed well and seems to work well for my project. Not great quality but good value for the price. One problem I've found is the hex head (Allen) set screws that hold the wires together when a 3mm hex tool is used to tighten them. My problem was that the 3mm tool didn't fit. I've tried 1/8 and 7/64 tools that are 3mm on both sides and neither worked. I suspect the coating on the set screws adds 0.05 to 0.10mm (2 to 3 thousand inches) preventing the tool from seating. I had the 3mm warn tool and after removing just a small portion of the width it seemed to fit snug enough to tighten the set screws.