This is an excellent quality product. The rails when installed are very sturdy and secure, and installation was not terribly difficult. That being said, I took off a star because the rails are advertised to support up to 300 pounds. Those of us who weigh that much tend to be wider, especially in the rear end. These rails do not adjust to be wide enough to accommodate my backside. But I've installed these in my guest room, as I have several friends who visit me who could use the additional support and and who are narrower and smaller than me. So I'd recommend these, but only keeping those reservations in mind.