Dwarvin HO Scale Street Lamps and building lights add interest to the layout without being obtrusive. The height of each light is 3" but can be adjusted by how much of the lamp is inserted into the base of the layout. The lamps are made from thin-walled metal tubing and fiber optic cable. The aim is to reproduce prototypical lighting and as such they are scaled to be equivalent to 18' 6m in height. Easy installation requires drilling a 1/8" diameter hole in the layout and inserting the fiber through the hole and then into the base of the lamp, which will be a snug fit into the 1/8" diameter hole. Then insert the fiber under the layout into the Lamplighter box. Lamps include 4' 1.3m of 1mm diameter fiber optic already attached to allow easy placement in proximity to the Lamplighter box. If the height of the lamp needs to be decreased, just insert it further into the 1/8 diameter hole in the layout. To change the ambiance / color, add a drop of translucent paint to the lamp end of the fiber. Each package includes three lamps unless noted. Check out the entire line of