Philips Halogen Reflector 14552 75W GZ4 12V Light Bulb (9240 432 17103)14552 75W GZ4 12V 1CT/10X5F*** UPC 8711500412447 is for 1 pc From PHILIPS ****** UPC 8711500425355 is for Carton with 50 pcs From PHILIPS ***Philips halogen reflector lamps offer the ideal no-fuss solution for a wide variety of medical, projection andscientific illumination systems. Their proven reliability makes them ideal for retrofit installations. The burners areprecisely aligned for optimal light performance. Dichroic reflectors ensure heat dissipation towards the back of theoptical system, which helps the optical system remain within temperature limits. A special blue-filter versionblocking out unwanted light above 700 nm is available for dental curing applications. In addition, you get all theproven advantages of halogen technology such as a CRI of 100 - the same as natural sunlight for the best possiblecolor rendering. Halogen lamps also create a comfortable warm white light, and they maintain their high lumenoutput with almost no lumen reduction throughout their lifetime.