Lytespan Sof-Tech PAR16 Spot Track Head features Lightolier's unique Cool-Grip aiming system that incorporates a bold silicone rubber band which surrounds the lighting element and allows you to aim the fixture even when hot. Solidly engineered with vents for heat dissipation to ensure cool operation. Front relamping for easy maintenance. Finish available in Matte White, Matte Black or Aluminum. One 75 watt, 120 volt PAR16 medium base lamp is required, but not included. UL listed. 2.8 inch diameter x 4.7 inch length. Compatible with Lytespan Basic 1-circuit, Advent 1 or 2 circuit, and Radius 1-circuit track systems.