Item Number: AC-PRC6RIdeal for heavy-duty applications requiring up to 200 amps of current and 8 AWG wire - untinned; pre-tinned wire can be tight - these are some of the largest shrouded connectors available, combining safety and performance. To simplify your charging setup, these connectors are available in red and blue - we recommend using one color for your batteries and the other for your ESC and charge cables, so that you know you're always making the right connection.Assembly InstructionsBattery Connection: Female bullet inside the larger housing is Negative. Male bullet inside the smaller housing is Positive.ESC/Charger Connection: Female bullet inside the larger housing is Positive. Male bullet inside the smaller housing is Negative.