A neat copy of an original wrench made by the Frank Mossberg Co. of Attleboro, MA during the era of the Model T.
This tool makes lining up the U-Joint with the output shaft of the transmission a snap when installing the engine or rear axle.
The original wrench had only the hooked end which is used when holding up the universal joint while working from above. We added the open end which enables the wrench to also be used from under the car..