I am not very handy, but my husband is with some things. He was always telling me things about the car that I really did not understand. But before long, I will learn these things. One thing I want to learn is how things are held in place and whether or not it is removable. It frustrates my husband when things are hard to get at or nuts slip when he is trying to loosen the bolt and it is hard to get at the other end. He likes working with t nuts because they tend to be solidly placed. A t-nut can fit into a slot that has been fitted for it, making removal of the bold from the t-nut much easier.