Review on Combining Hollow Wall Drywall Drilling by Sonny Nevers

As for self-drilling anchors, they are completely ordinary. Pre-drilling the pilot holes definitely helps prevent tip breakage, but they are no more or less brittle than other brands of anchors I've worked with. a hard tug can pry them out of the drywall. If a cornice had fallen on my head for being a lazy idiot who thought it was okay. And when they sink - oh my god they leave a hole. Much more than when the pop-up switch is released. Bottom line: They're great for hanging pictures, maybe a small shelf, and they're more convenient than any other lightweight anchor. Just don't let the fact that they're made of metal fool you into thinking they're durable. Also: buy putty when you order them. For example, a lot of putty. Therefore: idiot