If you need to fix up your garage door, one of the easiest parts to fix on your own are the door’s rollers. I found that nylon garage door rollers are the best way to go. They can replace existing nylon rollers or steel rollers, so no matter what type your door has you can go out and buy a package of these and know that they will not only work for your door, they will make it work better. They often come in 10 to a pack or you can buy them individually.
Another benefit is that the nylon rollers will last just as long as steel ones will. Best of all, they are a lot quieter than the steel rollers.
When you do buy them make sure to pick up some silicone lubricant. These garage door rollers will need to be lubricated at some point so you may as well have the proper stuff on hand to do the job when it is time. As for their size, they fit standard American garage door tracks. They are really easy to install too.