The clevis I am familiar with (for use on a drawbar) would be like the one you see on the attached picture of the pristine B8200. It's the black loop that is connected at the rear of the drawbar. They are available at places like Tractor Supply and give you an excellent pulling point for a chain. The hole in the drawbar is great for use as a hitch when a pin connects the load, but when a chain is required this is the ticket. Remember that a pulling point BELOW the axle is a requirement for safe operation.