1. Stretchable Length Up to 5Ft: Retractable 7pin to 4pin trailer adapter wiring cable 5 feet about 60 inches maximum (stretchable to 5ft, comfortable stetch length 3ft4ft) and bounce back to normal length 2. 7 to 4 Way Connector Extension Adapter: 7 way round to 4 way flat trailer adapter trailer adapter and extension cable allinone, eliminates your need for multiple plugs and adapters any popular vehicle wiring system to your trailer; Turns vehicleside 7 pin blade plug to a standard 4 wire flat trailer connector for towing trailer with 4 prong trailer light plug 3. Coiled Design: 7 way trailer coiled cable keeps trailer wire off ground; Stretchable 7 prong to 4 prong trailer light plug with 5' coiled cable provides the additional length to reach between the tow vehicle's socket and the trailer towed vehicle's plug 4. Easy installation: Plug and play Trailer Light Plug instantly switch 7 prong trailer plug to 4pin flat connector; Simply plugs the RV 7 blade trailer plug into your car end 7way receptacle and connect the trailerside 4wire trailer plug to the other end of the 4 flat coiled cable 5. Built to Last: coiled extension cable 7 way to 4 pin trailer plug adapter is made of upgraded high quality PU material, which is flexible, easy to stretch, effortless, quick to rebound and not easily deformed; Pure copper wire and tinplated terminals for corrosion resistance