The WARN Epic Sidewinder Isolator simply secures your Sidewinder Shackle when not being used for a recovery situation. The rugged terrain can cause the Sidewinder Shackle to scratch or cause other damage to your front bumper. Now you can prevent unwanted dings or dents from the rattling of your shackle with the Epic Sidewinder Isolator. The isolator also prevents the pin shaft from being exposed to debris. The isolator is made of polyurethane.