Features: The core wire is oxygen-free copper, and the insulation is covered with TPU. Multi-strand inner core copper wire, more stable, stronger-transmission signal. High and low temperature resistance, acid and alkali resistance, abrasion resistance and oil resistance, etc. Voltage-output: 12V/24VMain function: to connect and transmit electrical signals between the-tractor and the towed vehicle. Applications: Commercial vehicles/trailers/RVs/car/ships, etc. Specifications: Material: TPU+Copper Size:Approx.200cm/78.74inch Size:Approx.250cm/98.42inch Size:Approx.300cm/118.11inch Color: Black Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Trailer Extension Cable