1、Perfect for replacing worn out plugs on power supply ends or making a cable to a desired length or replacing a broken connector.<br>2、Easy to handle,you really don't have to be a professional to do this. Just insert the cables in the holes, twist and lock in place, and only then solder.<br>3、Dimension:External diameter is 5.5mm, internal diameter is 2.5mm NOTE: Please double check the connector dimension you need before placing the order<br>4、WIRING DIAGRAM:The longer side is negative, the shorter side is postive.<br>5、This listing comes with 4-Pack connectors with some shrinkle tube. it saves you much and makes you always have enough backup.Additional shrinkle tube make it a plus for you