Due to the amount of plastic used in the side rail retraction mechanism, I didn't find this design and style to be very durable. The last pair I bought only lasted 2+ years and then broke (the soft close extension stopped working - it slammed shut) - it was in a drawer with spoons, knives and forks so change it many times a day. I have 12 pairs in my kitchen. I have two that fail after a few days. I'm slowly going through different manufacturers and styles hoping to find one that actually lasts. So far the ones I've found aren't very durable: Promark, Liberty, Gobrico, GlideRite. Not tried yet: Rok Hardware, Knape Vogt, Decorite, King Slide, Fulterer, Accuride, Berta, UHPPOTE.