Measuring just 37mm in diameter each of these 3 LED Bright Stks from GE Lighting boasts a 15 year lamp life (based on 2.7 hours usage per day) and 100,000 switching cycles, alongside no mercury content for worry-free use and disposal. Each Edison Screw lamp offers a 240 degree beam angle, 470 lumen output and instant brightness. Rated at just 6 watt they match the output of a 40W incandescent and are a great solution for many domestic, hospitality and small business applications.