My ‘39 1/2 ton has a bracket on each side or the rear of the bed and I have no idea what their intended use is. Can anyone let me know what they were used for?

Thank you!

Mike

https://drive.google.com/file/d/1IYFwVi_5-ytUisPxQbkXeUxO9XQ5IjA_/view?usp=sharing


1939 1/2 ton Chevy