Adam Clarke on Exodus 36:38

The five pillars of it with their hooks - Their capitals. See Clarke on Exo 26:32 (note), etc.

There is scarcely any thing particular in this chapter that has not been touched on before; both it and the following to the end of the book being in general a repetition of what we have already met in detail in the preceding chapters from Exodus 25 to 31 inclusive, and to those the reader is requested to refer. God had before commanded this work to be done, and it was necessary to record the execution of it to show that all was done according to the pattern shown to Moses; without this detailed account we should not have known whether the work had ever been executed according to the directions given.

At the commencement of this chapter the reader will observe that I have advanced the dates a. m. and b.c. one year, without altering the year of the exodus, which at first view may appear an error; the reason is, that the above dates commenced at Tisri, but the years of the exodus are dated from Abib.