CINQUE LED SMD LAMPEGGIANTI BIANCO BRILLANTE 0603 VERY MINUSCOLI CON CAVI PRE-CABLATI 7 POLLICI
They are. 06 mm x. 03 mm. They're also brighter and last for years longer than an incandescent lamp. They are excellent for HO or N scale. The tiny wires are. 28 mm, red is positive and black is negative.