Plastic Spanner：Plastic spanner is a hard plastic material that is very handy for both the assembly of custom male and female wires, making it easier for veteran users to quickly and easily tighten and take apart the connectors. Precise Compatibility：100% compatible with SJZ SUN RUN solar panel connectors.Specifically crafted for use with MC-4 connectors, our wrench ensures a perfect fit and reliable connection for your solar power system. Save Time and Effort：The solar panel connector tools are easy and convenient to use, for breaking connections after they have already been locked together Easy Store：MC4 tool light, easy to carry and store,handy for repair for the assembly of custom solar connector wires. Gift：Buy SJZ SUN RUN solar photovoltaic cable and get a mc4 connector tool