You can't get too excited about drawer runners. These fit well, seem solidly built and were inexpensive. They appear to be better constructed than the originals they replaced. My only concern is whether they might rust a little in the long term as they aren't galvanised. Once ball bearings rust they impede the smooth running. Fitted them 6 weeks ago, so much to soon to predict how they will last over the years, but so far they seem absolutely fine.