Endurance, 18", 5 Wire Flat Trailer Side, Fifth Wire Provides Back Up Function On Boat Trailers Releasing The Surge Brakes, Maximum Durability, Superior Ergonomics, Easy Pull Grip, Ease In Connecting & Disconnecting, Heavy Duty Connector Housings With Built In Mounting Holes, Includes Trailer Side Molded In Dust Cover & Grease Packet, Protective Nylon Wire Sleeving & Heat Shrink Tubing, 3 Year Warranty.