Easy Fit Looks Good
These are great because you can snap them into your track with very little track length used. Be sure to get the type for your rail height code. They are designed to snap between the ties of Atlas track. They may not fit into other types with different tie spacing. I placed bi-color LEDs on them at my trolley stops. Red when train is approaching and green when it is departing, DC, of course on the trolley line.