Blue Sea Systems Dual Powerpost Cable Connectors 2016Dual 5/16”-18 insulated connector posts provide a termination point for high amperage cables and for extending outboard harnesses. Dual cable connector (2) 5/16 in.-18 studs 1 1/2 in. stud height 48 volts DC max voltage Ideal for extending the length of outboard engine harnesses Included red and black dual entry insulator caps prevent accidental grounding Features serrated flange nut to ensure secure lugs to stud connections #10 (M5) mounting screw size Glass-reinforced thermoplastic base material Specifically designed to withstand the harsh environments found in marine and mobile electrical applications