Product details:

The Elton Freejack Adjustable Double Head tilts and rotates infinitely. Rotates a full 360 degree and pivots 360 degrees to direct light beam to the desired location. Compatible for use with 1-circuit Monorail track system, Wall Monorail or Freejack canopy. Available in three stem lengths. Two 12 volt, up to 20 watt GU5.3 MR16 lamps are required, but not included. Integral louver lens holders can hold a single glass lens (sold separately) or an eggcrate louver (two included). Includes Freejack connector. Freejack canopy required if used as a monopoint, sold separately. LED canopy compatible with both halogen and LED lamp options. Dimmer type dependent on system transformer (low voltage magnetic or electronic).