Product review (1 stars): The quality of the replacement Fan Blade Arms appears to be good, but the measurement details need to be actual ...
Sadly the replacement arms do not fit my existing fan blades. Despite careful pre-measuring of existing holes prior to ordering the Westinghouse (77407) the holes do not line up, so are not usable. I am going to have to return these. That is the only reason for the 1 star rating.

The quality of the replacement Fan Blade Arms appears to be good, but the measurement  details need to be actual & specific.