Ukrainian producer "Agara" concrete lights in the model there are 3 types of lamps (Trego, grottoes and Briolette) in 5 different colors (white, gray, black, brown and blue). With the detailed description and characteristics are available on the website of the manufacturer: http://agara.com.ua  wire made using Linked Xform modifier, so the model itself can be easily twist / turn without worrying about its geometry. All the elements are interconnected, and have restrictions on rotations and displacements. The archive also has a simplified model without bindings.