Features: 4Pin connection is widely used in container trucks, buses, minivans for reverse camera connection. 4 lengths are convenient to fit for all kind of car, 4pin connection , support video and auditory signal transmission. The cable is 4.5mm PVC Jacketed Cable,4 Lengths Optional. Plugs are 4PIN male and female, female with locking screws, 2-end Plugs wire. The cable is connection to the power supply of the reversing light, which can automatically activates the reversing camera when the car is in reverse gear. Specifications: Connection Type: 4Pin Aviation Plugs Cable Type: 4Pin male to 4Pin female cable Cable Length about 10m/32.8ft 12m/39.37ft 15m/49.2ft 20m/65.60ft Package Includes: 1 PC 4Pin Aviation Plugs Cable note: Due to the problem of lighting effects there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.