This 2 Pack of PAR20 Halogen Flood Light Bulbs from Bluex Bulbs is perfect for indoor and outdoor use. With a 50W high output, these bulbs can replace 50W incandescent lamps and save 28% energy. The standard size of 3.2" height and 2.5" width with an E26 base makes them easy to install in any medium screw base socket. The bulbs are dimmable from 10%-100%, allowing you to adjust the brightness according to your needs. With a CRI100 (Color Rendering Index), you can see colors the way they are supposed to be seen. The bulbs are no mercury, instant-on at full brightness, and can switch on and off about 6000 times, saving you the cost of frequent bulb replacement. Perfect for small recessed cans, range hoods lights, track lights, rack lights, accent lighting, landscape lights, and pendants lights.