Sure Shock electric polyrope by Zareba is laced with 8 high-intensity aluminum conductor strands. Aluminum conductor wires deliver 20x more shocking power than other polyropes. Why? Most other polyropes use stainless steel for their conductor lines. Sure Shock, however, is built with toughness in mind – it’s PVC-coated, UV-protected and made with high-density fiberglass to double its strength. Sure Shock polyrope is ideal for temporary fencing and rotational grazing because it is lightweight, easy to use and can be re-spooled in just a few moments. Connect Sure Shock polyrope to a solar fence charger, lace it through step-in fence posts and attach a grounding system for an easily adjustable fence that can be set up anywhere on your property. Zareba backs this 8mm polyrope with a 5 year limited warranty. Each reel contains 656 feet of polyrope. Note: For use in temporary rotational grazing or in conjunction with permanent, perimeter fencing. It is not intended as the sole means of restraint. For best results: Use with a low-impedance fence charger. AC-powered fence charger should be UL listed. This product is not intended for use with continuous current or weed chopper types of fence chargers.