Product detail:Specially designed for remaining in good insertion for block heater in the freezing environment.Convenience hook added for securing the cord in position.The heavy duty standard allows to use for any applications.Cord Type: SPT-2, SPT-3, SJT, SJOW, SJTW Cord Awg: 16/3, 14/3, 12/3 Current A: 13, 15 Volts: 125