Enhance your model railroad lighting experience with the 3528RW 100pcs SMD LED 3528 Bi-Color Red / White LEDs. These LEDs are ready to go and pre-built, making them the perfect addition to your model railroad. The 1:87 scale plastic material with a light function feature provides a realistic and impressive lighting effect. Designed for HO gauge, these LEDs come with a DC power type and are suitable for ages 17 years and up.