The Ledvance led pin 40 320 degree dimmable p 4.5w 827 clear gy6.35 special lamp is the ideal replacement for your old Pin 40 halogen lamp. It offers a number of advantages over traditional halogen lamps.- Variable use at Direct Current and Alternating Current- Good all-around light emission- Ideal for decorative and free-burning applications- Very long lifetime of up to 25,000 h- Four year guarantee- Dimmable- Compatible with many common conventional and electronic control gears- LED alternative to low voltage halogen lamps