Needed to make 4 AWG welding wires. Assembly was easy, requiring no more than a set of metric allen keys. The cable can be easily plugged into a socket thanks to the supplied grommet. The rubber boot is keyed and the keys are marked on the front and it slides over the hex bar placing the end of the lug on a hard solid surface and pressing onto the rubber boot. Perfect replacement and fits my Harbor Freight Welder.