Very easy to install. Update after 40 days of use: The frame rails are beginning to separate. I have sent an email to the seller and am waiting for a reply. 2 weeks no answer will not buy again
Pros
These ball bearing runners are compatible with most common types of drawers and cabinets making them ideal for new build, renovation and replacement. The lengths are 10", 12", 14", 16", 18" and 20".