Overdrive EH80 Jelly Jar Upgrade is a perfect solution to upgrade Jelly Jar Utility Fixture from power hungry Incandescent or Mercury laden CFL's. It's one piece construction provides superb safety. It is easy to install by simply screwing into the threads of the commonly used Jelly Jar fixtures. The model has built in Constant Current Driver to provide uniform light over wide voltage range 120-277V.