CURT Replacement Double Lock EZr Safety Chain Anchor Kit Model 19254 TBO 72 The head is also compatible Headache Rack Rear Ladder Rack Gull Wing Box Options:Hex Headache Rack Only The head is also compatible with our 2 1 2" weight distribution shanks to match the heaviest of class 5 hitches The 1705920 Buyers Underbody Box is one of the best underbody truck boxes for your money This replacement safety chain anchor kit is designed to fit all CURT Double Lock EZr gooseneck hitches The U bolt anchors replace the existing anchors on the hitch and provide a secure attachment point for the trailer safety chains in the truck bed