Horizontal Roll-Out Upgrade Kit

Very smooth rolling

This was a bit difficult to put together, I had a really hard time getting everything aligned (not sure why). However, it went together well, and now rolls amazingly smoothly (yes I've been to lazy to finish moving the dumbbells). I did have to swap the screws so the nut was outside, otherwise the rollers would get caught. Overall, this is a great way to both get more space on the shelf, and get access to the heaviest dumbbells!