I didn't quite understand what a previous reviewer meant when she said that the screws broke during installation. I went ahead and purchased the product because I figured that, even if the included fasteners were of terrible quality, fasteners are easy to come by and I could always use others.
I'm glad I purchased these holdbacks, however I now understand what the aforementioned reviewer meant. Upon screwing the fasteners fasteners all the way into the wall, the head of the screw broke off, leaving the body of the screw embedded in the wall and the holdback unattached. This is a problem for obvious reasons, and I don't really relish repairing its ramifications.
That being said, the holdbacks themselves are excellent. They're elegant, stylish, and of solid quality. I highly recommend them and suggest you purchase them if you like the way they look-- just be sure to use different fasteners. Standard 3/8" screws will do just fine.