I adapted these rollers to very old drawer slides where the nylon rollers were failing. They worked well with a little fuss, a little sanding, a little drilling to remove and put in the old wheel axles. It would be nice if the thread size and nut were specified in the product description! I found they were 8mm and had Home Depot nuts to secure them. All in all, a simple solution instead of installing new rails in old cabinets.