White wire warm white m5 LED lights are 7.5 feet long 70-count so that professional installers can plug up to 35 sets together in short sections to allow not a lot of overhang at the end of the roof. These lights are professional grade much better than what you're going to find a big box store, where the lights are potential problems.
If you don’t buy professional grade LEDs, you can be in for a disaster, but these perform well and are very durable.