Insert a standard u-ground plug into a Bad Ass lockng connector and the two will not separate until you release the automatic lock. No more accidental disconnects or wasted time plugging your tools back in. The molded on connectors will not separate from the cord and provide extra water resistance. The lighted ends tell you when power is flowing through the cord. Water resistant, fire retardant and maintains flexibility to -40°F. Safety-certified by Underwriters' Laboratories (UL).