Miniatronics again hits it out of the park with these warm yellow LED packs. These have the long leads that hobbyists like myself need to make soldering wires easier. They also come with the resistors you need to get them to work with your set's power pack, taking the guesswork out for those who (like me) are not electronically inclined. I like the size and color of these the most. They give off a charming yellow glow that is perfect for house interiors or external structure lighting and are small enough that they can be hidden as needed, or even shown with the rounded 'bulb' exposed and the rest painted black. A truly excellent product that has really contributed to the 'mood' of my model railroad.