Got these and they indeed are making life easier with the hooks and chains.Home Depot, Lowes, or any decent hardware store. Looks like this. The barrel looking piece acts as a nut and is threaded. It would unscrew from the lower end, then it will slide up the smooth shaft to make a gap to put it on your hitch. Once it's on, screw it back together and tighten it up and drop your chain hooks through it. They are only a couple of bucks apiece.
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