Found this universal joint kicking around in an old garage. Appears to be a universal joint for 5/8" rod, but does not have any fasteners. Same on both ends. I would expect a D shape at the least. In any event, no markings on it. OD appears to be 1". Lenght is 3 7/16". Not sure if this is come kind of tool, attachment or a part. Any guesses?


