
These two wrenches are the most common ones used. The cool thing is these are also interchangeable between Metric and Standard for their size ranges. 13mm = 1/2″ and 14mm=9/16″.
Once upon a time, I owned a huge Snap-On tool chest filled with tools just like these in all shapes and sizes. Now I just have a few of my favorites left.
Sometime a few years after I retired professionally from turning the wrenches, I sold most of them. Since then, as needed, I’ve replaced with Craftsman.