Heavy Duty: The 2 port insulated multi tap connector is designed for 6 AWG, 4 AWG, 2 AWG, 1-1/0 AWG wires, which makes it can handle wider range of wire cables. Superior Material: Our insulated wire connectors 1/0-14AWG is made of solid aluminum with rugged high dielectric rubber/PVC coating, these insulated multi tap connectors exhibit exceptional reliability and safety.