The Autmatch D-Ring Isolators and Washers Kits Install On Any Standard 3/4 Inches D-Ring or Bow Shackle. They are Constructed of A Durable Rubber Material. The Rubber Acts as An Isolator Kits For The Shackle and Protects The Shackle From Tapping Against A Bumper or Any Other Recovery Point and Reduce Rattling Noise When The Vehicle Is In Motion. The Autmatch D-Ring Isolators & Washers Kits Will Withstand The Elements of The Trail or Everyday Driving. They Simply Snap Into Place and Can Be Installed or Removed In Moments. Our D-Ring Isolators & Washers Kits Can Help Any Off-Road Vehicle.