Well, I'll be honest. I didn't have high hopes for these slides. I needed a lot and they were the cheapest so I got them! I didn't think the quality would be great just because they are affordable. I was SO wrong! These slides are amazing. I can't believe how high quality they are given the price. They are so strong, glide smoothly, don't sag when the drawer is open and have their own version of "soft close". There is a rubber stopper on the back to keep the drawers from slamming shut (unless you really try). I love these slides way more than the soft close slides I bought for $30 a pair.