Direct-Lighting 50004 Brushed Steel PAR20 Line Voltage Gimbal Ring Track Lighting Head PAR20 Line Voltage Gimbal Ring Track Lighting Head E26 socket (Medium / Screw-in base) base. 50W Max. Halogen bulb. ( BULB NOT INCLUDED) H type compatible with H type 3-wire-1 circuit track system 350 horizontal rotation or 90 vertical project. UL Listed. Rated for Indoor use or Dry locations. Installation Video: http://youtu.be/QpwIEEQFJwg