Kits are the easiest way to order MonoRail. Each kit comes with all the power and hardware you need for most basic installations. Surface transformer mounts to a standard 4 junction box (provided by electrician), rail drops 3.6 from ceiling. Add up to three 50 watt elements or up to four 35 or 37 watt elements (sold separately). All MonoRail kits include: 8 foot long hand bendable MonoRail. Choose from antique bronze with brown insulation; chrome with clear insulation; or satin nickel with clear insulation Two sets of decorative end caps Two rigid standoff supports 150 watt surface mounted transformer with power feed Customize your kit with these options (sold separately): MonoRail drop options MonoRail extender options Tech Lighting low voltage headsMore details about product 150 Watt Surface Transformer MonoRail Kit