How to measure for replacement drum brake shoes?

#1
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I’m trying to order replacement brake shoes for my Heald superbronc front drum brakes but not sure of the size any and all help is greatly appreciated! Thanks
 
#3
Thanks,your right I got an answer from Azusa parts. They said to measure the shoe from end to end metal not including pad material and going up the half from there. So 4 1/2 is what I need.
 
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