It's easy to replace your T8, T9, T10 or T12 fluorescent lamps. Simply remove the existing ballast, and pop these guys in! Retrofit those energy sucking and flickering fluorescent tube lighting with Watt-a-Light high efficiency bulbs! The primary advantage of our LED tubes is superior energy savings and long service life. Switching over will save you both time and money with substantial energy conservation and significantly decreased long-term replacement costs.