I have 16 drawers that need new tracks. I only bought one to see if it was worth going through all the tracks to replace this product. The track was very easy to set up and initially worked great. When there is nothing in the drawer it glides beautifully. As I started to fill the drawer with a few items I noticed that it wasn't sliding as easily and the bottom of the drawer scratched the cabinet opening.The metal that attaches the two side casters is very soft and flexes with minimal effort..I must have had a pound of stuff in the drawer and the metal couldn't hold it.The casters are repelled by the weight and won't return to their original position.You have to bend the metal to make it roll again, but after a while it starts to bi again eg. I don't understand why such a soft metal would be used in a high voltage part. The price couldn't be better, and if you don't keep a lot in your drawers or don't mind scraping wood, then this will work. . I will look for another option for my boxes.