GE 43699 single-ended quartzline lamps are compact, pinpoint light sources that direct a crisp, white beam of light precisely where it's needed for maximum lighting flexibility and control. This lamp last up to 2000 hours. Quality of construction features include corrosion-resistant base and high-temperature seals to withstand extreme operating conditions. These lamps are dimmable, too, for special effect lighting.GE Single-Ended Quartzline lamps provide reliable performance, scene after scene. Used for theatre, television, film, and photography applications.