Various Application:4 pin aviation extension cable widely used in RV, Truck, Tanker Truck , Semi-truck, Trailer, Horse Trailer, Bus, Motorhome, Farm Harvester Tractor, Caravans , Van, Long-distance Car for connecting backup camera system, surveillance CCTV system. The wire is 4.5mm PVC sheath, the conductor is 4-core oxygen-free copper conductor, The Plug is M12-4PIN male and female, the female has a locking screw Product use: This 4pin interface is widely used for the reversing camera connection of container trucks, buses, and small trucks. The 4 lengths are convenient for adapting to various cars. The 4pin interface supports video and audio signal transmission. Colour:Black Material:PVC+oxygen-free copper Size:15m/10m/20m Package Contents: 1 x Video Camera Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.