After hours of wasted effort pursuing other options I used these anchors to install a pedestal sink to a tiled wall when the blocking didn't align with the mounting holes.. If you're having trouble finding an anchor that really holds strong these are the ticket, forget the traditional toggles with their huge entry holes and chintzy bolts.. I think as long as you handle the plastic parts in a gingerly manner and make sure the toggle is properly aligned you shouldn't have problems- I did notice that the plastic seemed brittle but I removed and reinserted one toggle a few times and it didn't snap like some of the other reviewers mentioned. I love the beefy 1/4" 20 bolts that can be swapped out for longer hex heads for torquing down the mount in confined spaces (like the underside of a pedestal sink) Highly recommended for anything too heavy and important for plastic expanders or traditional toggles.
Pros: Easy to Install, Nice Design