This was designed to hold a Clevis Pin(link below) while loading/unloading the trailer. use a zip tie on the back to hold it on the trailer :) https://www.autozone.com/trailer-hitch-hitch-balls-and-towing-accessories/pin-and-clip/p/towsmart-1-2in-x-4-3-4in-clevis-pin/1203170_0_0