This breaker bar was included in a complete S-K 1/2" drive box set. It bears no markings.
This breaker bar has the Pebble panels on both sides. On one side is "PLOMB" and on the other is "MFD 3265 U.S.A."
This breaker bar appears crudely made. The outsides of the handle are ribbed while the centers are flat. The shank is stamped Owatonna Tool Co., Made in U.S.A., Owatonna, Minn.
This breaker bar has the model number, Duro-Chrome and Made In U.S.A. stamped into the shaft. The end of the handle also has a male 3/8 receptable.
This breaker bar has 1/2 female drive hole in the end of the handle. It also has a holefor a 7/16" cross bar.
This breaker has a 3/8" male on the handle. ChromeX was made by Vlchek, Duro and Herbrand. This tool is Duro sourced.
Notice the D stamped after WF-7. We do not yet know the meaning of these stamps.