Westinghouse CFL twist and mini-twist light bulbs are a brilliant alternative to traditional incandescent or halogens bulbs. These CFLs last up to 10 times longer and use 75% less energy than incandescent light bulbs having the same light output. These light bulbs last on average 10,000 hours. To help you find the right bulb for the right application, see Westinghouse full offering of CFL twist and mini-twist light bulbs available in a variety of colors including warm white, cool white and daylight. The CFLs with GU24 bases are compatible for use with many standard household fixtures--everything from chandeliers, recessed or track lighting, table lamps to porch lights and post lanterns with GU24 sockets. These light bulbs contain mercury. Dispose of according to local, state or federal laws. Product reference number 37990.