These tube lights are very easy to install. Simply remove the existing ballast, and plunk these guys in! Replace those energy sucking and flickering fluorescent tube lighting with these energy saving UL Certified LED tube lights! LED tube lights or T8 bulbs are the new modern source of light that is now being used instead of traditional fluorescent tubes. The primary advantages of LED tubes are energy efficiency and long service life. By switching to LED tube lights, you not only save money on energy usage but also on long-term replacement costs.