Hopkins 49915 16 Gauge 25 ft Bonded 4- Wire Hopkins Manufacturing Corporation makes your towing experience simpler and more rewarding through innovation and value. Hopkins offers a variety of towing solutions including vehicle wiring kits, adapters, vehicle and trailer connectors, breakaway systems, and much more. Today, more than 40 percentage of retail category sales are generated from Hopkins innovations. Bonded wire, such as Hopkins' 25' 16/18 Gauge Bonded Wire Spool, works great for all basic wiring needs. Easy to read printed functions makes wire identification simple. Features 100 percent copper 4 wire bonded Ideal for all basic wiring needs 16 gauge on ground, 18 gauge on all others 25 feet long Printed wire functions for easy wire reference USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.