RV Cord Connector Locking Plug W/Cover Ring Power Socket 30Amp for Caravan Trailer Item Type: Cord Connector With Cover Ring Material: PlasticTotal Mounting Length: Approx. 7.5inCover and Ring ID: Approx. 1.7inCover and Ring OD: Approx. 3in Deep Inside: Approx. 3inOuter Length: Approx. 5inConnector Size(Measurement on Face): Approx. 1.7inRose to the back where the between the wires adds 0.25 inches (2 inches wide); total length is 3.9 inches (3.9 in)How e:(Easy e)1. Replace the end on your existing power cord with the 30 Amp Locking Connector with Boot and Ring.2. Remove the housing by loosening the 3 screws on the face of the device, slide the included weather-resistant boot over the cable, and slide the housing over the cable.3. Strip the outer jacket of the cord and each individual conductor.4. Insert all the wires into the proper color-coded terminal pockets. 5. Tighten the terminal screws and strain relief screws. 6. Slide the housing over the connector body, tighten the assembly screws, and slide weather-resistant boot over the complete assembly.