The seller did not ask me to review this product and I am in no way paid or compensated for writing this review, so this is as honest as it gets: Me have used them as stud-mounted support brackets for my Ikea Kallax 1 x 4 wall mounted cube shelf. They are strong enough to support a significant amount of weight (over 40 pounds each in my opinion) and flexible enough to to be flush with the edge next to the wall and the shelf when fully fixed. Unless you like living dangerously, I recommend using them in groups of at least three to distribute the weight evenly. On a scale of 1 to 10, where 1 = "Ikea Quality" and 10 = "Snap-On Quality", this is a solid 5. In my opinion, at the time of this review, they are worth their price . I shopped for about an hour and these proved to be the best due to their compact size, linear holes and a small feature that increases their folding strength.