A:AnswerThis wall mount will work with most 40" TVs.
The tools needed are listed in the Quick Setup Guide, here is the link: https://files.bbystatic.com/imMYybwBFzoiamlxWg7IJw%3D%3D/DX-HTMF1620_19-0529_QSG_V2_EN_Final_lr.pdf
A:AnswerI don’t know about the concrete wall! However, I have a “55” and it’s holding up fine! I was a little skeptical when I took it out the box!!! But I love it!! I’ll recommend this item. I give it 4 stars!!!