Using these track bumpers is easy. Just place them at the end of your HO scale tracks where you need protection. They fit well with popular HO track brands. When using, make sure the tracks are clean and properly aligned to ensure a good fit. For maintenance, simply use a soft cloth to wipe them clean. Keep them away from sharp objects to avoid scratches. If you're storing them, place them in a dry and cool place to prevent any damage. They are suitable for modeling eras from the 1940s to the present, so you can use them in various layout themes.